Makefile.fetch                                                        |    1 
 RepositoryExternal.mk                                                 |   51 +
 bin/lo-all-static-libs                                                |    1 
 config_host.mk.in                                                     |    3 
 configure.ac                                                          |    6 
 download.lst                                                          |    2 
 external/Module_external.mk                                           |    1 
 external/libwebp/ExternalProject_libwebp.mk                           |   52 +
 external/libwebp/Makefile                                             |    7 
 external/libwebp/Makefile.vc.patch                                    |  145 
++++
 external/libwebp/Module_libwebp.mk                                    |   17 
 external/libwebp/README                                               |    1 
 external/libwebp/UnpackedTarball_libwebp.mk                           |   20 
 filter/Configuration_filter.mk                                        |   13 
 filter/qa/complex/filter/detection/typeDetection/files.csv            |    1 
 filter/source/config/cache/typedetection.cxx                          |    1 
 filter/source/config/fragments/filters/WEBP___WebP.xcu                |   30 
 filter/source/config/fragments/filters/calc_webp_Export.xcu           |   20 
 filter/source/config/fragments/filters/draw_webp_Export.xcu           |   30 
 filter/source/config/fragments/filters/impress_webp_Export.xcu        |   30 
 filter/source/config/fragments/filters/writer_web_webp_Export.xcu     |   21 
 filter/source/config/fragments/filters/writer_webp_Export.xcu         |   30 
 filter/source/config/fragments/internalgraphicfilters/webp_Export.xcu |   27 
 filter/source/config/fragments/internalgraphicfilters/webp_Import.xcu |   27 
 filter/source/config/fragments/types/webp_WebP.xcu                    |   29 
 icon-themes/breeze/res/sx03223.png                                    |binary
 icon-themes/breeze_dark/res/sx03223.png                               |binary
 icon-themes/breeze_dark_svg/res/sx03223.svg                           |    1 
 icon-themes/breeze_svg/res/sx03223.svg                                |    1 
 include/sal/log-areas.dox                                             |    1 
 include/svl/inettype.hxx                                              |    2 
 include/svtools/imagemgr.hxx                                          |    1 
 include/svx/strings.hrc                                               |    1 
 include/vcl/gfxlink.hxx                                               |    5 
 include/vcl/graphicfilter.hxx                                         |    6 
 include/vcl/salctype.hxx                                              |    3 
 readlicense_oo/license/license.xml                                    |   31 
 scp2/source/draw/registryitem_draw.scp                                |    1 
 solenv/sanitizers/ui/svt.suppr                                        |    2 
 svtools/inc/bitmaps.hlst                                              |    2 
 svtools/source/filter/exportdialog.cxx                                |   53 +
 svtools/source/filter/exportdialog.hxx                                |    9 
 svtools/source/misc/imagemgr.cxx                                      |    5 
 svtools/uiconfig/ui/graphicexport.ui                                  |   36 -
 svx/source/core/graphichelper.cxx                                     |    6 
 svx/source/gallery2/galtheme.cxx                                      |    1 
 svx/source/xml/xmlgrhlp.cxx                                           |    1 
 svx/source/xoutdev/_xoutbmp.cxx                                       |    2 
 vcl/CppunitTest_vcl_filters_test.mk                                   |    1 
 vcl/Executable_webpfuzzer.mk                                          |   45 +
 vcl/Library_vcl.mk                                                    |    3 
 vcl/Module_vcl.mk                                                     |    1 
 vcl/inc/filter/WebpReader.hxx                                         |   28 
 vcl/inc/filter/WebpWriter.hxx                                         |   29 
 vcl/inc/graphic/GraphicFormatDetector.hxx                             |    1 
 vcl/inc/graphic/UnoGraphicDescriptor.hxx                              |    1 
 vcl/qa/cppunit/GraphicDescriptorTest.cxx                              |   16 
 vcl/qa/cppunit/GraphicFormatDetectorTest.cxx                          |   17 
 vcl/qa/cppunit/GraphicTest.cxx                                        |   12 
 vcl/qa/cppunit/data/TypeDetectionExample.webp                         |binary
 vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossless.webp            |binary
 vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossy.webp               |binary
 vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossless.webp          |binary
 vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossy.webp             |binary
 vcl/qa/cppunit/graphicfilter/filters-test.cxx                         |    2 
 vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx                    |  203 
++++++
 vcl/source/filter/FilterConfigCache.cxx                               |    6 
 vcl/source/filter/GraphicFormatDetector.cxx                           |   22 
 vcl/source/filter/graphicfilter.cxx                                   |   53 +
 vcl/source/filter/graphicfilter2.cxx                                  |   33 +
 vcl/source/filter/webp/reader.cxx                                     |  318 
++++++++++
 vcl/source/filter/webp/writer.cxx                                     |  206 
++++++
 vcl/source/gdi/gfxlink.cxx                                            |    1 
 vcl/source/gdi/mtfxmldump.cxx                                         |    1 
 vcl/source/graphic/UnoGraphicDescriptor.cxx                           |    2 
 vcl/workben/fftester.cxx                                              |    7 
 vcl/workben/webpfuzzer.cxx                                            |   48 +
 vcl/workben/webpfuzzer.options                                        |    2 
 78 files changed, 1769 insertions(+), 25 deletions(-)

New commits:
commit 60eaa424c5e213f31227008e1ed66a646491a360
Author:     Luboš Luňák <[email protected]>
AuthorDate: Thu Jan 13 15:59:49 2022 +0100
Commit:     Miklos Vajna <[email protected]>
CommitDate: Mon Jan 31 10:44:29 2022 +0100

    support for the WebP image format (tdf#114532)
    
    This commit implements a WebP reader and writer for both lossless
    and lossy WebP, export dialog options for selecting lossless/lossy
    and quality for lossy, and various internal support for the format.
    
    Since writing WebP to e.g. ODT documents would make those images
    unreadable by previous versions with no WebP support, support
    for that is explicitly disabled in GraphicFilter, to be enabled
    somewhen later.
    
    Change-Id: I9b10f6da6faa78a0bb74415a92e9f163c14685f7
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/128920
    Tested-by: Jenkins
    Reviewed-by: Tomaž Vajngerl <[email protected]>

diff --git a/Makefile.fetch b/Makefile.fetch
index b988fbf7e717..78ff78b9e312 100644
--- a/Makefile.fetch
+++ b/Makefile.fetch
@@ -161,6 +161,7 @@ $(WORKDIR)/download: $(BUILDDIR)/config_$(gb_Side).mk 
$(SRCDIR)/download.lst $(S
                $(call fetch_Optional,LIBNUMBERTEXT,LIBNUMBERTEXT_TARBALL) \
                $(call fetch_Optional,LIBPNG,LIBPNG_TARBALL) \
                $(call fetch_Optional,LIBTOMMATH,LIBTOMMATH_TARBALL) \
+               $(call fetch_Optional,LIBWEBP,LIBWEBP_TARBALL) \
                $(call fetch_Optional,LIBXML2,LIBXML_TARBALL) \
                $(call fetch_Optional,XMLSEC,XMLSEC_TARBALL) \
                $(call fetch_Optional,LIBXSLT,LIBXSLT_TARBALL) \
diff --git a/RepositoryExternal.mk b/RepositoryExternal.mk
index 6ba871409779..2e7e86266e34 100644
--- a/RepositoryExternal.mk
+++ b/RepositoryExternal.mk
@@ -2608,6 +2608,57 @@ endef
 endif # !SYSTEM_LIBPNG
 
 
+ifneq ($(SYSTEM_LIBWEBP),)
+
+define gb_LinkTarget__use_libwebp
+$(call gb_LinkTarget_set_include,$(1),\
+       $$(INCLUDE) \
+       $(LIBWEBP_CFLAGS) \
+)
+
+$(call gb_LinkTarget_add_libs,$(1),\
+       $(LIBWEBP_LIBS) \
+)
+
+endef
+
+gb_ExternalProject__use_libwebp :=
+
+else # !SYSTEM_LIBWEBP
+
+define gb_LinkTarget__use_libwebp
+$(call gb_LinkTarget_set_include,$(1),\
+       $(LIBWEBP_CFLAGS) \
+       $$(INCLUDE) \
+)
+
+$(call gb_LinkTarget_set_include,$(1),\
+       -I$(call gb_UnpackedTarball_get_dir,libwebp)/src \
+       $$(INCLUDE) \
+)
+ifeq ($(OS),WNT)
+$(call gb_LinkTarget_add_libs,$(1),\
+       $(call 
gb_UnpackedTarball_get_dir,libwebp)/output/lib/libwebp$(gb_StaticLibrary_PLAINEXT)
 \
+)
+else
+$(call gb_LinkTarget_add_libs,$(1),\
+       -L$(call gb_UnpackedTarball_get_dir,libwebp)/src/.libs -lwebp \
+)
+endif
+$(call gb_LinkTarget_use_external_project,$(1),libwebp)
+
+endef
+
+define gb_ExternalProject__use_libwebp
+$(call gb_ExternalProject_use_external_project,$(1),\
+       libwebp \
+)
+
+endef
+
+endif # !SYSTEM_LIBWEBP
+
+
 ifneq ($(SYSTEM_CURL),)
 
 define gb_LinkTarget__use_curl
diff --git a/bin/lo-all-static-libs b/bin/lo-all-static-libs
index 11230c695248..fbe6d7010624 100755
--- a/bin/lo-all-static-libs
+++ b/bin/lo-all-static-libs
@@ -123,6 +123,7 @@ echo $INSTDIR/$LIBO_LIB_FOLDER/lib*.a \
      $WORKDIR/UnpackedTarball/liborcus/src/*/.libs/*.a \
      $WORKDIR/UnpackedTarball/librevenge/src/*/.libs/*.a \
      $WORKDIR/UnpackedTarball/libvisio/src/lib/.libs/*.a \
+     $WORKDIR/UnpackedTarball/libwebp/src/.libs/*.a \
      $WORKDIR/UnpackedTarball/libwp?/src/lib/.libs/*.a \
      $WORKDIR/UnpackedTarball/raptor/src/.libs/*.a \
      $WORKDIR/UnpackedTarball/rasqal/src/.libs/*.a \
diff --git a/config_host.mk.in b/config_host.mk.in
index f512e719ee6c..3aee8c0f84bb 100644
--- a/config_host.mk.in
+++ b/config_host.mk.in
@@ -417,6 +417,8 @@ export LIBSERIALIZER_JAR=@LIBSERIALIZER_JAR@
 export LIBTOMMATH_CFLAGS=@LIBTOMMATH_CFLAGS@
 export LIBTOMMATH_LIBS=@LIBTOMMATH_LIBS@
 export LIBTOOL=@LIBTOOL@
+export LIBWEBP_CFLAGS=$(gb_SPACE)@LIBWEBP_CFLAGS@
+export LIBWEBP_LIBS=$(gb_SPACE)@LIBWEBP_LIBS@
 export LIBXML_CFLAGS=$(gb_SPACE)@LIBXML_CFLAGS@
 export LIBXML_JAR=@LIBXML_JAR@
 export LIBXML_LIBS=$(gb_SPACE)@LIBXML_LIBS@
@@ -640,6 +642,7 @@ export SYSTEM_LIBNUMBERTEXT_DATA=@SYSTEM_LIBNUMBERTEXT_DATA@
 export SYSTEM_LIBORCUS=@SYSTEM_LIBORCUS@
 export SYSTEM_LIBPNG=@SYSTEM_LIBPNG@
 export SYSTEM_LIBTOMMATH=@SYSTEM_LIBTOMMATH@
+export SYSTEM_LIBWEBP=@SYSTEM_LIBWEBP@
 export SYSTEM_LIBXML=@SYSTEM_LIBXML@
 export SYSTEM_LIBXML_FOR_BUILD=@SYSTEM_LIBXML_FOR_BUILD@
 export SYSTEM_LIBXSLT=@SYSTEM_LIBXSLT@
diff --git a/configure.ac b/configure.ac
index 2f4e9fa56875..bb53c75fac73 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13437,6 +13437,12 @@ 
LIBPNG_CFLAGS_internal="-I${WORKDIR}/UnpackedTarball/libpng"
 LIBPNG_LIBS_internal="-L${WORKDIR}/LinkTarget/StaticLibrary -llibpng"
 libo_CHECK_SYSTEM_MODULE([libpng],[LIBPNG],[libpng])
 
+dnl ===================================================================
+dnl Test whether to build libwebp or rely on the system version
+dnl ===================================================================
+
+libo_CHECK_SYSTEM_MODULE([libwebp],[LIBWEBP],[libwebp])
+
 dnl ===================================================================
 dnl Check for runtime JVM search path
 dnl ===================================================================
diff --git a/download.lst b/download.lst
index e3f10866ea53..48f847b64ff8 100644
--- a/download.lst
+++ b/download.lst
@@ -160,6 +160,8 @@ export LIBNUMBERTEXT_SHA256SUM := 
db9060d208501bd7bc06300a55d8489d29dd560ee0fbbd
 export LIBNUMBERTEXT_TARBALL := libnumbertext-1.0.8.tar.xz
 export LIBTOMMATH_SHA256SUM := 
083daa92d8ee6f4af96a6143b12d7fc8fe1a547e14f862304f7281f8f7347483
 export LIBTOMMATH_TARBALL := ltm-1.0.zip
+export LIBWEBP_SHA256SUM := 
808b98d2f5b84e9b27fdef6c5372dac769c3bda4502febbfa5031bd3c4d7d018
+export LIBWEBP_TARBALL := libwebp-1.2.1.tar.gz
 export XMLSEC_SHA256SUM := 
26041d35a20a245ed5a2fb9ee075f10825664d274220cb5190340fa87a4d0931
 export XMLSEC_TARBALL := xmlsec1-1.2.33.tar.gz
 export LIBXML_SHA256SUM := 
c8d6681e38c56f172892c85ddc0852e1fd4b53b4209e7f4ebf17f7e2eae71d92
diff --git a/external/Module_external.mk b/external/Module_external.mk
index 66759274caa8..946b9dd16ed7 100644
--- a/external/Module_external.mk
+++ b/external/Module_external.mk
@@ -62,6 +62,7 @@ $(eval $(call gb_Module_add_moduledirs,external,\
        $(call gb_Helper_optional,LIBLANGTAG,liblangtag) \
        $(call gb_Helper_optional,LIBNUMBERTEXT,libnumbertext) \
        $(call gb_Helper_optional,LIBPNG,libpng) \
+       $(call gb_Helper_optional,LIBWEBP,libwebp) \
        $(call gb_Helper_optional,LIBXML2,libxml2) \
        $(call gb_Helper_optional,LIBXSLT,libxslt) \
        $(call gb_Helper_optional,LPSOLVE,lpsolve) \
diff --git a/external/libwebp/ExternalProject_libwebp.mk 
b/external/libwebp/ExternalProject_libwebp.mk
new file mode 100644
index 000000000000..beb7a39e7b64
--- /dev/null
+++ b/external/libwebp/ExternalProject_libwebp.mk
@@ -0,0 +1,52 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_ExternalProject_ExternalProject,libwebp))
+
+$(eval $(call gb_ExternalProject_register_targets,libwebp,\
+       build \
+))
+
+ifeq ($(COM),MSC)
+$(eval $(call gb_ExternalProject_use_nmake,libwebp,build))
+
+$(call gb_ExternalProject_get_state_target,libwebp,build):
+       $(call gb_Trace_StartRange,libwebp,EXTERNAL)
+       $(call gb_ExternalProject_run,build,\
+               nmake -nologo -f Makefile.vc CFG=release-static RTLIBCFG=static 
OBJDIR=output \
+       )
+       $(call gb_Trace_EndRange,libwebp,EXTERNAL)
+else
+$(eval $(call gb_ExternalProject_use_autoconf,libwebp,build))
+
+$(call gb_ExternalProject_get_state_target,libwebp,build) :
+       $(call gb_Trace_StartRange,libwebp,EXTERNAL)
+       $(call gb_ExternalProject_run,build,\
+               export PKG_CONFIG="" \
+               && MAKE=$(MAKE) $(gb_RUN_CONFIGURE) ./configure \
+                       --enable-static \
+                       --with-pic \
+                       --disable-shared \
+                       --disable-gl \
+                       --disable-sdl \
+                       --disable-png \
+                       --disable-jpeg \
+                       --disable-tiff \
+                       --disable-gif \
+                       --disable-wic \
+                       $(if 
$(verbose),--disable-silent-rules,--enable-silent-rules) \
+                       CXXFLAGS="$(gb_CXXFLAGS) $(if 
$(ENABLE_OPTIMIZED),$(gb_COMPILEROPTFLAGS),$(gb_COMPILERNOOPTFLAGS))" \
+                       CPPFLAGS="$(CPPFLAGS) $(BOOST_CPPFLAGS)" \
+                       $(if $(CROSS_COMPILING),--build=$(BUILD_PLATFORM) 
--host=$(HOST_PLATFORM)) \
+               && $(MAKE) \
+       )
+       $(call gb_Trace_EndRange,libwebp,EXTERNAL)
+endif
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/libwebp/Makefile b/external/libwebp/Makefile
new file mode 100644
index 000000000000..e4968cf85fb6
--- /dev/null
+++ b/external/libwebp/Makefile
@@ -0,0 +1,7 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+
+module_directory:=$(dir $(realpath $(firstword $(MAKEFILE_LIST))))
+
+include $(module_directory)/../../solenv/gbuild/partial_build.mk
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/libwebp/Makefile.vc.patch 
b/external/libwebp/Makefile.vc.patch
new file mode 100644
index 000000000000..653998319b82
--- /dev/null
+++ b/external/libwebp/Makefile.vc.patch
@@ -0,0 +1,145 @@
+--- Makefile.vc.sav    2021-07-30 00:55:37.000000000 +0200
++++ Makefile.vc        2022-01-25 17:35:30.206117700 +0100
+@@ -7,11 +7,11 @@
+ LIBWEBPDEMUX_BASENAME = libwebpdemux
+ 
+ !IFNDEF ARCH
+-!IF ! [ cl 2>&1 | find "x86" > NUL ]
++!IF ! [ $(CC) 2>&1 | grep -q "x86" > NUL ]
+ ARCH = x86
+-!ELSE IF ! [ cl 2>&1 | find "x64" > NUL ]
++!ELSE IF ! [ $(CC) 2>&1 | grep -q "x64" > NUL ]
+ ARCH = x64
+-!ELSE IF ! [ cl 2>&1 | find "ARM" > NUL ]
++!ELSE IF ! [ $(CC) 2>&1 | grep -q "ARM" > NUL ]
+ ARCH = ARM
+ !ELSE
+ !ERROR Unable to auto-detect toolchain architecture! \
+@@ -27,8 +27,8 @@
+ ## Nothing more to do below this line!
+ 
+ NOLOGO     = /nologo
+-CCNODBG    = cl.exe $(NOLOGO) /O2 /DNDEBUG
+-CCDEBUG    = cl.exe $(NOLOGO) /Od /Zi /D_DEBUG /RTC1
++CCNODBG    = $(CC) $(NOLOGO) /O2 /DNDEBUG
++CCDEBUG    = $(CC) $(NOLOGO) /Od /Zi /D_DEBUG /RTC1
+ CFLAGS     = /I. /Isrc $(NOLOGO) /W3 /EHsc /c
+ CFLAGS     = $(CFLAGS) /DWIN32 /D_CRT_SECURE_NO_WARNINGS /DWIN32_LEAN_AND_MEAN
+ LDFLAGS    = /LARGEADDRESSAWARE /MANIFEST /NXCOMPAT /DYNAMICBASE
+@@ -67,7 +67,7 @@
+ RTLIB   = /MD
+ RTLIBD  = /MDd
+ !ENDIF
+-DIRBASE = $(OUTDIR)\$(CFG)\$(ARCH)
++DIRBASE = $(OUTDIR)
+ DIROBJ = $(DIRBASE)\obj
+ DIRLIB = $(DIRBASE)\lib
+ DIRINC = $(DIRBASE)\include
+@@ -86,10 +86,10 @@
+ 
+ # Target configuration
+ !IF "$(CFG)" == "release-static"
+-CC             = $(CCNODBG)
++CC_             = $(CCNODBG)
+ STATICLIBBUILD = TRUE
+ !ELSE IF "$(CFG)" == "debug-static"
+-CC             = $(CCDEBUG)
++CC_             = $(CCDEBUG)
+ RTLIB          = $(RTLIBD)
+ STATICLIBBUILD = TRUE
+ LIBWEBPDECODER_BASENAME = $(LIBWEBPDECODER_BASENAME)_debug
+@@ -97,11 +97,11 @@
+ LIBWEBPMUX_BASENAME = $(LIBWEBPMUX_BASENAME)_debug
+ LIBWEBPDEMUX_BASENAME = $(LIBWEBPDEMUX_BASENAME)_debug
+ !ELSE IF "$(CFG)" == "release-dynamic"
+-CC        = $(CCNODBG)
++CC_        = $(CCNODBG)
+ RC        = $(RCNODBG)
+ DLLBUILD  = TRUE
+ !ELSE IF "$(CFG)" == "debug-dynamic"
+-CC        = $(CCDEBUG)
++CC_        = $(CCDEBUG)
+ RC        = $(RCDEBUG)
+ RTLIB     = $(RTLIBD)
+ DLLBUILD  = TRUE
+@@ -112,7 +112,7 @@
+ !ENDIF
+ 
+ !IF "$(STATICLIBBUILD)" == "TRUE"
+-CC     = $(CC) $(RTLIB)
++CC_     = $(CC_) $(RTLIB)
+ CFGSET = TRUE
+ LIBWEBPDECODER = $(DIRLIB)\$(LIBWEBPDECODER_BASENAME).lib
+ LIBWEBP = $(DIRLIB)\$(LIBWEBP_BASENAME).lib
+@@ -120,7 +120,7 @@
+ LIBWEBPDEMUX = $(DIRLIB)\$(LIBWEBPDEMUX_BASENAME).lib
+ !ELSE IF "$(DLLBUILD)" == "TRUE"
+ DLLINC = webp_dll.h
+-CC     = $(CC) /I$(DIROBJ) /FI$(DLLINC) $(RTLIB) /DWEBP_DLL
++CC_     = $(CC_) /I$(DIROBJ) /FI$(DLLINC) $(RTLIB) /DWEBP_DLL
+ LIBWEBPDECODER = $(DIRLIB)\$(LIBWEBPDECODER_BASENAME)_dll.lib
+ LIBWEBP = $(DIRLIB)\$(LIBWEBP_BASENAME)_dll.lib
+ LIBWEBPMUX = $(DIRLIB)\$(LIBWEBPMUX_BASENAME)_dll.lib
+@@ -421,7 +421,7 @@
+     $(DIROBJ)\$(DLLINC)
+ 
+ {$(DIROBJ)}.c{$(DIROBJ)}.obj:
+-      $(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$@  $<
++      $(CC_) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$@  $<
+ 
+ {src}.rc{$(DIROBJ)}.res:
+       $(RC) /fo$@ $<
+@@ -461,39 +461,39 @@
+ # File-specific flag builds. Note batch rules take precedence over wildcards,
+ # so for now name each file individually.
+ $(DIROBJ)\examples\anim_diff.obj: examples\anim_diff.c
+-      $(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
++      $(CC_) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
+         /Fo$(DIROBJ)\examples\ examples\$(@B).c
+ $(DIROBJ)\examples\anim_dump.obj: examples\anim_dump.c
+-      $(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
++      $(CC_) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
+         /Fo$(DIROBJ)\examples\ examples\$(@B).c
+ $(DIROBJ)\examples\anim_util.obj: examples\anim_util.c
+-      $(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
++      $(CC_) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
+         /Fo$(DIROBJ)\examples\ examples\$(@B).c
+ $(DIROBJ)\examples\gif2webp.obj: examples\gif2webp.c
+-      $(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
++      $(CC_) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
+         /Fo$(DIROBJ)\examples\ examples\$(@B).c
+ $(DIROBJ)\examples\gifdec.obj: examples\gifdec.c
+-      $(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
++      $(CC_) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
+         /Fo$(DIROBJ)\examples\ examples\$(@B).c
+ # Batch rules
+ {examples}.c{$(DIROBJ)\examples}.obj::
+-      $(CC) $(CFLAGS) /Fd$(DIROBJ)\examples\ /Fo$(DIROBJ)\examples\ $<
++      $(CC_) $(CFLAGS) /Fd$(DIROBJ)\examples\ /Fo$(DIROBJ)\examples\ $<
+ {extras}.c{$(DIROBJ)\extras}.obj::
+-      $(CC) $(CFLAGS) /Fd$(DIROBJ)\extras\ /Fo$(DIROBJ)\extras\ $<
++      $(CC_) $(CFLAGS) /Fd$(DIROBJ)\extras\ /Fo$(DIROBJ)\extras\ $<
+ {imageio}.c{$(DIROBJ)\imageio}.obj::
+-      $(CC) $(CFLAGS) /Fd$(DIROBJ)\imageio\ /Fo$(DIROBJ)\imageio\ $<
++      $(CC_) $(CFLAGS) /Fd$(DIROBJ)\imageio\ /Fo$(DIROBJ)\imageio\ $<
+ {src\dec}.c{$(DIROBJ)\dec}.obj::
+-      $(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dec\ $<
++      $(CC_) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dec\ $<
+ {src\demux}.c{$(DIROBJ)\demux}.obj::
+-      $(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\demux\ $<
++      $(CC_) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\demux\ $<
+ {src\dsp}.c{$(DIROBJ)\dsp}.obj::
+-      $(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dsp\ $<
++      $(CC_) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dsp\ $<
+ {src\enc}.c{$(DIROBJ)\enc}.obj::
+-      $(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\enc\ $<
++      $(CC_) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\enc\ $<
+ {src\mux}.c{$(DIROBJ)\mux}.obj::
+-      $(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\mux\ $<
++      $(CC_) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\mux\ $<
+ {src\utils}.c{$(DIROBJ)\utils}.obj::
+-      $(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\utils\ $<
++      $(CC_) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\utils\ $<
+ 
+ LNKLIBS     = ole32.lib windowscodecs.lib shlwapi.lib
+ !IF "$(UNICODE)" == "1"
diff --git a/external/libwebp/Module_libwebp.mk 
b/external/libwebp/Module_libwebp.mk
new file mode 100644
index 000000000000..b89056ac3d35
--- /dev/null
+++ b/external/libwebp/Module_libwebp.mk
@@ -0,0 +1,17 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_Module_Module,libwebp))
+
+$(eval $(call gb_Module_add_targets,libwebp,\
+       ExternalProject_libwebp \
+       UnpackedTarball_libwebp \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/libwebp/README b/external/libwebp/README
new file mode 100644
index 000000000000..1308c278baca
--- /dev/null
+++ b/external/libwebp/README
@@ -0,0 +1 @@
+libwebp is a library to encode and decode images in WebP format, from 
[https://developers.google.com/speed/webp/]
diff --git a/external/libwebp/UnpackedTarball_libwebp.mk 
b/external/libwebp/UnpackedTarball_libwebp.mk
new file mode 100644
index 000000000000..67f797157717
--- /dev/null
+++ b/external/libwebp/UnpackedTarball_libwebp.mk
@@ -0,0 +1,20 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_UnpackedTarball_UnpackedTarball,libwebp))
+
+$(eval $(call gb_UnpackedTarball_set_tarball,libwebp,$(LIBWEBP_TARBALL)))
+
+$(eval $(call gb_UnpackedTarball_set_patchlevel,libwebp,0))
+
+$(eval $(call gb_UnpackedTarball_add_patches,libwebp,\
+       external/libwebp/Makefile.vc.patch \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/filter/Configuration_filter.mk b/filter/Configuration_filter.mk
index dfeacc6a542c..a58b8396c551 100644
--- a/filter/Configuration_filter.mk
+++ b/filter/Configuration_filter.mk
@@ -442,6 +442,7 @@ $(eval $(call 
filter_Configuration_add_filters,fcfg_langpack,fcfg_web_filters.xc
        writer_web_pdf_Export\
        writer_web_png_Export\
        writer_web_jpg_Export\
+       writer_web_webp_Export\
        writerweb8_writer_template\
        writerweb8_writer \
 ))
@@ -715,6 +716,7 @@ $(eval $(call 
filter_Configuration_add_types,fcfg_langpack,fcfg_drawgraphics_typ
        svm_StarView_Metafile \
        tga_Truevision_TARGA \
        tif_Tag_Image_File \
+       webp_WebP \
        wmf_MS_Windows_Metafile \
        xbm_X_Consortium \
        xpm_XPM \
@@ -742,6 +744,7 @@ $(eval $(call 
filter_Configuration_add_filters,fcfg_langpack,fcfg_drawgraphics_f
        SVM___StarView_Metafile \
        TGA___Truevision_TARGA \
        TIF___Tag_Image_File \
+       WEBP___WebP \
        WMF___MS_Windows_Metafile \
        XBM___X_Consortium \
        XPM \
@@ -757,6 +760,7 @@ $(eval $(call 
filter_Configuration_add_filters,fcfg_langpack,fcfg_drawgraphics_f
        draw_png_Export \
        draw_svg_Export \
        draw_tif_Export \
+       draw_webp_Export \
        draw_wmf_Export \
 ))
 
@@ -781,6 +785,7 @@ $(eval $(call 
filter_Configuration_add_types,fcfg_langpack,fcfg_impressgraphics_
        svm_StarView_Metafile \
        tif_Tag_Image_File \
        wmf_MS_Windows_Metafile \
+       webp_WebP \
        xpm_XPM \
 ))
 
@@ -795,6 +800,7 @@ $(eval $(call 
filter_Configuration_add_filters,fcfg_langpack,fcfg_impressgraphic
        impress_png_Export \
        impress_svg_Export \
        impress_tif_Export \
+       impress_webp_Export \
        impress_wmf_Export \
 ))
 
@@ -809,6 +815,7 @@ $(eval $(call 
filter_Configuration_add_filters,fcfg_langpack,fcfg_writergraphics
        writer_jpg_Export \
        writer_png_Export \
        writer_svg_Export \
+       writer_webp_Export \
 ))
 
 # fcfg_calcgraphics
@@ -821,6 +828,7 @@ $(eval $(call 
filter_Configuration_add_filters,fcfg_langpack,fcfg_calcgraphics_f
        calc_jpg_Export \
        calc_png_Export \
        calc_svg_Export \
+       calc_webp_Export \
 ))
 
 # fcfg_internalgraphics
@@ -848,6 +856,7 @@ $(eval $(call 
filter_Configuration_add_types,fcfg_langpack,fcfg_internalgraphics
        svm_StarView_Metafile \
        tga_Truevision_TARGA \
        tif_Tag_Image_File \
+       webp_WebP \
        wmf_MS_Windows_Metafile \
        xbm_X_Consortium \
        xpm_XPM \
@@ -887,11 +896,13 @@ $(eval $(call 
filter_Configuration_add_internal_filters,fcfg_langpack,fcfg_inter
        tga_Import \
        tif_Export \
        tif_Import \
+       webp_Export \
+       webp_Import \
        wmf_Export \
        wmf_Import \
        xbm_Import \
        xpm_Import \
-        mov_Import \
+       mov_Import \
 ))
 
 # fcfg_xslt
diff --git a/filter/qa/complex/filter/detection/typeDetection/files.csv 
b/filter/qa/complex/filter/detection/typeDetection/files.csv
index b882ea1179ca..8e558590b4e7 100644
--- a/filter/qa/complex/filter/detection/typeDetection/files.csv
+++ b/filter/qa/complex/filter/detection/typeDetection/files.csv
@@ -111,6 +111,7 @@ 
ppm;Graphics/pic.ppm;ppm_Portable_Pixelmap;ppm_Portable_Pixelmap
 ras;Graphics/pic.ras;ras_Sun_Rasterfile;ras_Sun_Rasterfile
 svm;Graphics/pic.svm;svm_StarView_Metafile;svm_StarView_Metafile:generic_Text
 tif;Graphics/pic.tif;tif_Tag_Image_File;tif_Tag_Image_File:generic_Text
+webp;Graphics/pic.webp;webp_WebP;webp_WebP
 
wmf;Graphics/pic.wmf;wmf_MS_Windows_Metafile;wmf_MS_Windows_Metafile:generic_Text
 
 
diff --git a/filter/source/config/cache/typedetection.cxx 
b/filter/source/config/cache/typedetection.cxx
index ac4d9aed9f2a..b91ac31566af 100644
--- a/filter/source/config/cache/typedetection.cxx
+++ b/filter/source/config/cache/typedetection.cxx
@@ -232,6 +232,7 @@ int getFlatTypeRank(const OUString& rType)
         "pcd_Photo_CD_Base",
         "pcd_Photo_CD_Base4",
         "pcd_Photo_CD_Base16",
+        "webp_WebP",
         "impress_CGM_Computer_Graphics_Metafile", // There is binary and ascii 
variants ?
         "draw_WordPerfect_Graphics",
         "draw_Visio_Document",
diff --git a/filter/source/config/fragments/filters/WEBP___WebP.xcu 
b/filter/source/config/fragments/filters/WEBP___WebP.xcu
new file mode 100644
index 000000000000..9c650e3de42e
--- /dev/null
+++ b/filter/source/config/fragments/filters/WEBP___WebP.xcu
@@ -0,0 +1,30 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+-->
+    <node oor:name="WEBP - WebP" oor:op="replace">
+        <prop oor:name="Flags"><value>IMPORT ALIEN</value></prop>
+        <prop oor:name="UIComponent"/>
+        <prop oor:name="FilterService"/>
+        <prop oor:name="UserData"><value></value></prop>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="FileFormatVersion"><value>0</value></prop>
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="TemplateName"/>
+        <prop 
oor:name="DocumentService"><value>com.sun.star.drawing.DrawingDocument</value></prop>
+    </node>
diff --git a/filter/source/config/fragments/filters/calc_webp_Export.xcu 
b/filter/source/config/fragments/filters/calc_webp_Export.xcu
new file mode 100644
index 000000000000..a6e5d18a3347
--- /dev/null
+++ b/filter/source/config/fragments/filters/calc_webp_Export.xcu
@@ -0,0 +1,20 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-->
+    <node oor:name="calc_webp_Export" oor:op="replace">
+        <prop oor:name="Flags"><value>EXPORT ALIEN 3RDPARTYFILTER 
SUPPORTSSELECTION</value></prop>
+        <prop 
oor:name="UIComponent"><value>com.sun.star.svtools.SvFilterOptionsDialog</value></prop>
+        <prop 
oor:name="FilterService"><value>com.sun.star.comp.GraphicExportFilter</value></prop>
+        <prop oor:name="UserData"><value></value></prop>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="FileFormatVersion"><value>0</value></prop>
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="TemplateName"/>
+        <prop 
oor:name="DocumentService"><value>com.sun.star.sheet.SpreadsheetDocument</value></prop>
+    </node>
diff --git a/filter/source/config/fragments/filters/draw_webp_Export.xcu 
b/filter/source/config/fragments/filters/draw_webp_Export.xcu
new file mode 100644
index 000000000000..e6da69197a61
--- /dev/null
+++ b/filter/source/config/fragments/filters/draw_webp_Export.xcu
@@ -0,0 +1,30 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+-->
+    <node oor:name="draw_webp_Export" oor:op="replace">
+        <prop oor:name="Flags"><value>EXPORT ALIEN 
SUPPORTSSELECTION</value></prop>
+        <prop 
oor:name="UIComponent"><value>com.sun.star.svtools.SvFilterOptionsDialog</value></prop>
+        <prop oor:name="FilterService"/>
+        <prop oor:name="UserData"><value></value></prop>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="FileFormatVersion"><value>0</value></prop>
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="TemplateName"/>
+        <prop 
oor:name="DocumentService"><value>com.sun.star.drawing.DrawingDocument</value></prop>
+    </node>
diff --git a/filter/source/config/fragments/filters/impress_webp_Export.xcu 
b/filter/source/config/fragments/filters/impress_webp_Export.xcu
new file mode 100644
index 000000000000..00284a272cba
--- /dev/null
+++ b/filter/source/config/fragments/filters/impress_webp_Export.xcu
@@ -0,0 +1,30 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+-->
+    <node oor:name="impress_webp_Export" oor:op="replace">
+        <prop oor:name="Flags"><value>EXPORT ALIEN 
SUPPORTSSELECTION</value></prop>
+        <prop 
oor:name="UIComponent"><value>com.sun.star.svtools.SvFilterOptionsDialog</value></prop>
+        <prop oor:name="FilterService"/>
+        <prop oor:name="UserData"><value></value></prop>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="FileFormatVersion"><value>0</value></prop>
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="TemplateName"/>
+        <prop 
oor:name="DocumentService"><value>com.sun.star.presentation.PresentationDocument</value></prop>
+    </node>
diff --git a/filter/source/config/fragments/filters/writer_web_webp_Export.xcu 
b/filter/source/config/fragments/filters/writer_web_webp_Export.xcu
new file mode 100644
index 000000000000..5273bb72228b
--- /dev/null
+++ b/filter/source/config/fragments/filters/writer_web_webp_Export.xcu
@@ -0,0 +1,21 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+-->
+    <node oor:name="writer_web_webp_Export" oor:op="replace">
+        <prop oor:name="Flags"><value>EXPORT ALIEN 
3RDPARTYFILTER</value></prop>
+        <prop 
oor:name="UIComponent"><value>com.sun.star.svtools.SvFilterOptionsDialog</value></prop>
+        <prop 
oor:name="FilterService"><value>com.sun.star.comp.GraphicExportFilter</value></prop>
+        <prop oor:name="UserData"><value></value></prop>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="FileFormatVersion"><value>0</value></prop>
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="TemplateName"/>
+        <prop 
oor:name="DocumentService"><value>com.sun.star.text.WebDocument</value></prop>
+    </node>
diff --git a/filter/source/config/fragments/filters/writer_webp_Export.xcu 
b/filter/source/config/fragments/filters/writer_webp_Export.xcu
new file mode 100644
index 000000000000..ceb56a8c035f
--- /dev/null
+++ b/filter/source/config/fragments/filters/writer_webp_Export.xcu
@@ -0,0 +1,30 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+-->
+    <node oor:name="writer_webp_Export" oor:op="replace">
+        <prop oor:name="Flags"><value>EXPORT ALIEN 
3RDPARTYFILTER</value></prop>
+        <prop 
oor:name="UIComponent"><value>com.sun.star.svtools.SvFilterOptionsDialog</value></prop>
+        <prop 
oor:name="FilterService"><value>com.sun.star.comp.GraphicExportFilter</value></prop>
+        <prop oor:name="UserData"><value></value></prop>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="FileFormatVersion"><value>0</value></prop>
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="TemplateName"/>
+        <prop 
oor:name="DocumentService"><value>com.sun.star.text.TextDocument</value></prop>
+    </node>
diff --git 
a/filter/source/config/fragments/internalgraphicfilters/webp_Export.xcu 
b/filter/source/config/fragments/internalgraphicfilters/webp_Export.xcu
new file mode 100644
index 000000000000..70ff15429734
--- /dev/null
+++ b/filter/source/config/fragments/internalgraphicfilters/webp_Export.xcu
@@ -0,0 +1,27 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+-->
+    <node oor:name="webp_Export" oor:op="replace"  >
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="FormatName"><value>SVEWEBP</value></prop>
+        <prop oor:name="RealFilterName"/>
+        <prop 
oor:name="UIComponent"><value>com.sun.star.svtools.SvFilterOptionsDialog</value></prop>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="Flags"><value>EXPORT</value></prop>
+    </node>
diff --git 
a/filter/source/config/fragments/internalgraphicfilters/webp_Import.xcu 
b/filter/source/config/fragments/internalgraphicfilters/webp_Import.xcu
new file mode 100644
index 000000000000..cdce5c9e4047
--- /dev/null
+++ b/filter/source/config/fragments/internalgraphicfilters/webp_Import.xcu
@@ -0,0 +1,27 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+-->
+    <node oor:name="webp_Import" oor:op="replace"  >
+        <prop oor:name="Type"><value>webp_WebP</value></prop>
+        <prop oor:name="FormatName"><value>SVIWEBP</value></prop>
+        <prop oor:name="RealFilterName"><value>WEBP - WebP</value></prop>
+        <prop oor:name="UIComponent"/>
+        <prop oor:name="UIName">
+            <value xml:lang="en-US">WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="Flags"><value>IMPORT</value></prop>
+    </node>
diff --git a/filter/source/config/fragments/types/webp_WebP.xcu 
b/filter/source/config/fragments/types/webp_WebP.xcu
new file mode 100644
index 000000000000..e58984fbedc7
--- /dev/null
+++ b/filter/source/config/fragments/types/webp_WebP.xcu
@@ -0,0 +1,29 @@
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+-->
+    <node oor:name="webp_WebP" oor:op="replace" >
+        <prop 
oor:name="DetectService"><value>com.sun.star.comp.draw.FormatDetector</value></prop>
+        <prop oor:name="URLPattern"/>
+        <prop oor:name="Extensions"><value>webp</value></prop>
+        <prop oor:name="MediaType"><value>image/webp</value></prop>
+        <prop oor:name="Preferred"><value>false</value></prop>
+        <prop oor:name="PreferredFilter"><value>WEBP - WebP</value></prop>
+        <prop oor:name="UIName">
+            <value>WEBP - WebP Image</value>
+        </prop>
+        <prop oor:name="ClipboardFormat"/>
+    </node>
diff --git a/icon-themes/breeze/res/sx03223.png 
b/icon-themes/breeze/res/sx03223.png
new file mode 100644
index 000000000000..82e6f7b14f31
Binary files /dev/null and b/icon-themes/breeze/res/sx03223.png differ
diff --git a/icon-themes/breeze_dark/res/sx03223.png 
b/icon-themes/breeze_dark/res/sx03223.png
new file mode 100644
index 000000000000..82e6f7b14f31
Binary files /dev/null and b/icon-themes/breeze_dark/res/sx03223.png differ
diff --git a/icon-themes/breeze_dark_svg/res/sx03223.svg 
b/icon-themes/breeze_dark_svg/res/sx03223.svg
new file mode 100644
index 000000000000..576860153fb7
--- /dev/null
+++ b/icon-themes/breeze_dark_svg/res/sx03223.svg
@@ -0,0 +1 @@
+<svg viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg";><path d="m2 
2v8.992188l-1 1v.007812h1v2h12v-2.998047h1v-.009765l-1-1.0000005v-7.9921875zm1 
1h10v5.9921875l-3.9941406-3.9921875h-.0058594v.0019531h-.0058594l-2.4960937 
2.4921875-.4941407-.4941406h-.0039062-.0039062l-2.9960938 2.9941406zm2 1c-.554 
0-1 .446-1 1s.446 1 1 1 1-.446 1-1-.446-1-1-1zm4 2.4101562 4 
3.9980468v.591797h-2.992188l-2.8007808-2.796875zm-3 2 .5.5 2.0898438 
2.0898438h-5.1816407zm-3 
3.5898438h6.5898438l.0019531.001953h1.4082031v-.001953h2v1h-10z" 
fill="#4e9b06"/></svg>
\ No newline at end of file
diff --git a/icon-themes/breeze_svg/res/sx03223.svg 
b/icon-themes/breeze_svg/res/sx03223.svg
new file mode 100644
index 000000000000..576860153fb7
--- /dev/null
+++ b/icon-themes/breeze_svg/res/sx03223.svg
@@ -0,0 +1 @@
+<svg viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg";><path d="m2 
2v8.992188l-1 1v.007812h1v2h12v-2.998047h1v-.009765l-1-1.0000005v-7.9921875zm1 
1h10v5.9921875l-3.9941406-3.9921875h-.0058594v.0019531h-.0058594l-2.4960937 
2.4921875-.4941407-.4941406h-.0039062-.0039062l-2.9960938 2.9941406zm2 1c-.554 
0-1 .446-1 1s.446 1 1 1 1-.446 1-1-.446-1-1-1zm4 2.4101562 4 
3.9980468v.591797h-2.992188l-2.8007808-2.796875zm-3 2 .5.5 2.0898438 
2.0898438h-5.1816407zm-3 
3.5898438h6.5898438l.0019531.001953h1.4082031v-.001953h2v1h-10z" 
fill="#4e9b06"/></svg>
\ No newline at end of file
diff --git a/include/sal/log-areas.dox b/include/sal/log-areas.dox
index 5767a9e5265f..174a7ca3ca15 100644
--- a/include/sal/log-areas.dox
+++ b/include/sal/log-areas.dox
@@ -469,6 +469,7 @@ certain functionality.
 @li @c vcl.emf - EMF/EMF+ processing
 @li @c vcl.eventtesting
 @li @c vcl.filter
+@li @c vcl.filter.webp
 @li @c vcl.fonts - font-specific code
 @li @c vcl.fonts.detail
 @li @c vcl.gdi - the GDI part of VCL, devices, bitmaps, etc.
diff --git a/include/svl/inettype.hxx b/include/svl/inettype.hxx
index 13663fd3b260..dc5aa4f3a732 100644
--- a/include/svl/inettype.hxx
+++ b/include/svl/inettype.hxx
@@ -103,6 +103,7 @@ inline constexpr OUStringLiteral CONTENT_TYPE_STR_IMAGE_PCX 
= u"image/pcx";
 inline constexpr OUStringLiteral CONTENT_TYPE_STR_IMAGE_PNG = u"image/png";
 inline constexpr OUStringLiteral CONTENT_TYPE_STR_IMAGE_TIFF = u"image/tiff";
 inline constexpr OUStringLiteral CONTENT_TYPE_STR_IMAGE_BMP = 
u"image/x-MS-bmp";
+inline constexpr OUStringLiteral CONTENT_TYPE_STR_IMAGE_WEBP = u"image/webp";
 inline constexpr OUStringLiteral CONTENT_TYPE_STR_INET_MSG_RFC822 = 
u"message/rfc822";
 inline constexpr OUStringLiteral CONTENT_TYPE_STR_INET_MULTI_ALTERNATIVE = 
u"multipart/alternative";
 inline constexpr OUStringLiteral CONTENT_TYPE_STR_INET_MULTI_DIGEST = 
u"multipart/digest";
@@ -178,6 +179,7 @@ enum INetContentType
     CONTENT_TYPE_IMAGE_PNG,
     CONTENT_TYPE_IMAGE_TIFF,
     CONTENT_TYPE_IMAGE_BMP,
+    CONTENT_TYPE_IMAGE_WEBP,
     CONTENT_TYPE_TEXT_HTML,
     CONTENT_TYPE_TEXT_PLAIN,
     CONTENT_TYPE_TEXT_URL,
diff --git a/include/svtools/imagemgr.hxx b/include/svtools/imagemgr.hxx
index 6abe56b08bb0..a2b48247f4d2 100644
--- a/include/svtools/imagemgr.hxx
+++ b/include/svtools/imagemgr.hxx
@@ -37,6 +37,7 @@ enum class SvImageId {
     GIF                    = START + 61,
     HTML                   = START + 63,
     JPG                    = START + 64,
+    WEBP                   = START + 65,
     Math                   = START + 68,
     MathTemplate           = START + 69,
     File                   = START + 74,
diff --git a/include/svx/strings.hrc b/include/svx/strings.hrc
index c172cbfa0a3c..a368a4c77906 100644
--- a/include/svx/strings.hrc
+++ b/include/svx/strings.hrc
@@ -1412,6 +1412,7 @@
 #define STR_IMAGE_PCT                                       
NC_("STR_IMAGE_PCT", "PCT image")
 #define STR_IMAGE_SVG                                       
NC_("STR_IMAGE_SVG", "SVG image")
 #define STR_IMAGE_BMP                                       
NC_("STR_IMAGE_BMP", "BMP image")
+#define STR_IMAGE_WEBP                                      
NC_("STR_IMAGE_WEBP", "WebP image")
 #define STR_IMAGE_UNKNOWN                                   
NC_("STR_IMAGE_UNKNOWN", "Unknown")
 
 #define STR_SWITCH                                          NC_("STR_SWITCH", 
"Switch")
diff --git a/include/vcl/gfxlink.hxx b/include/vcl/gfxlink.hxx
index ad4caebc7b86..30228f339cd7 100644
--- a/include/vcl/gfxlink.hxx
+++ b/include/vcl/gfxlink.hxx
@@ -47,12 +47,13 @@ enum class GfxLinkType
     NativeSvg    = 9,
     NativeMov    = 10,
     NativeBmp    = 11,
-    NativePdf    = 12, // If a new type is added, make sure to change 
NativeLast too
+    NativePdf    = 12,
+    NativeWebp   = 13, // If a new type is added, make sure to change 
NativeLast too
 
     // Alias for when the first native type starts and last native
     // type ends.
     NativeFirst  = NativeGif,
-    NativeLast   = NativePdf,
+    NativeLast   = NativeWebp,
 };
 
 class Graphic;
diff --git a/include/vcl/graphicfilter.hxx b/include/vcl/graphicfilter.hxx
index b1eba2b141ed..2d2f071e7d71 100644
--- a/include/vcl/graphicfilter.hxx
+++ b/include/vcl/graphicfilter.hxx
@@ -89,6 +89,7 @@ namespace o3tl
 #define IMP_PCD                 "SVPCD"
 #define IMP_PBM                 "SVPBM"
 #define IMP_DXF                 "SVDXF"
+#define IMP_WEBP                "SVIWEBP"
 
 #define EXP_BMP                 "SVBMP"
 #define EXP_SVMETAFILE          "SVMETAFILE"
@@ -101,6 +102,7 @@ namespace o3tl
 #define EXP_TIFF                "SVTIFF"
 #define EXP_EPS                 "SVEEPS"
 #define EXP_GIF                 "SVEGIF"
+#define EXP_WEBP                "SVEWEBP"
 
 
 inline constexpr OUStringLiteral BMP_SHORTNAME = u"BMP";
@@ -115,6 +117,7 @@ inline constexpr OUStringLiteral WMF_SHORTNAME = u"WMF";
 inline constexpr OUStringLiteral EMF_SHORTNAME = u"EMF";
 inline constexpr OUStringLiteral SVG_SHORTNAME = u"SVG";
 inline constexpr OUStringLiteral PDF_SHORTNAME = u"PDF";
+inline constexpr OUStringLiteral WEBP_SHORTNAME = u"WEBP";
 
 //  Info class for all supported file formats
 
@@ -137,6 +140,7 @@ enum class GraphicFileFormat
     TGA = 0x000e,
     PSD = 0x000f,
     EPS = 0x0010,
+    WEBP = 0x0011,
     DXF = 0x00f1,
     MET = 0x00f2,
     PCT = 0x00f3,
@@ -184,6 +188,7 @@ class VCL_DLLPUBLIC GraphicDescriptor final
     bool            ImpDetectTGA( SvStream& rStm, bool bExtendedInfo );
     bool            ImpDetectPSD( SvStream& rStm, bool bExtendedInfo );
     bool            ImpDetectEPS( SvStream& rStm, bool bExtendedInfo );
+    bool            ImpDetectWEBP( SvStream& rStm, bool bExtendedInfo );
     bool            ImpDetectDXF( SvStream& rStm, bool bExtendedInfo );
     bool            ImpDetectMET( SvStream& rStm, bool bExtendedInfo );
     bool            ImpDetectPCT( SvStream& rStm, bool bExtendedInfo );
@@ -374,6 +379,7 @@ public:
     static ErrCode readPCD(SvStream & rStream, Graphic & rGraphic);
     static ErrCode readPBM(SvStream & rStream, Graphic & rGraphic);
     static ErrCode readDXF(SvStream & rStream, Graphic & rGraphic);
+    static ErrCode readWEBP(SvStream & rStream, Graphic & rGraphic, 
GfxLinkType & rLinkType);
 
 private:
     OUString        aFilterPath;
diff --git a/include/vcl/salctype.hxx b/include/vcl/salctype.hxx
index 409fc5a79993..71f256b1986e 100644
--- a/include/vcl/salctype.hxx
+++ b/include/vcl/salctype.hxx
@@ -37,7 +37,8 @@ enum class ConvertDataFormat
     TIF,
     WMF,
     EMF,
-    SVG
+    SVG,
+    WEBP
 };
 
 class SvStream;
diff --git a/readlicense_oo/license/license.xml 
b/readlicense_oo/license/license.xml
index 389c8c7cd006..9c00f393bf77 100644
--- a/readlicense_oo/license/license.xml
+++ b/readlicense_oo/license/license.xml
@@ -1129,6 +1129,37 @@
         glennrp at users.sourceforge.net<br />
         February 3, 2011  </p>
     </div>
+    <div class="LIBWEBP">
+        <h2>libwebp</h2>
+        <p>The following software may be included in this product: libwebp. 
Use of any of this software is governed by
+        the terms of the license below:</p>
+        <p>Copyright (c) 2010, Google Inc. All rights reserved.</p>
+        <p>Redistribution and use in source and binary forms, with or without
+        modification, are permitted provided that the following conditions are
+        met:</p>
+        <ol>
+            <li>Redistributions of source code must retain the above copyright
+                notice, this list of conditions and the following 
disclaimer.</li>
+            <li>Redistributions in binary form must reproduce the above 
copyright
+                notice, this list of conditions and the following disclaimer in
+                the documentation and/or other materials provided with the
+                distribution.</li>
+            <li>Neither the name of Google nor the names of its contributors 
may
+                be used to endorse or promote products derived from this 
software
+                without specific prior written permission.</li>
+        </ol>
+        <p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+        "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+        LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+        A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+        HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+        SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+        LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+        DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+        THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+        (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+        OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 
DAMAGE.</p>
+    </div>
     <div class="PAGEMAKER">
         <h2>libpagemaker</h2>
         <p>The following software may be included in this product: 
libpagemaker. Use of any of this software is governed
diff --git a/scp2/source/draw/registryitem_draw.scp 
b/scp2/source/draw/registryitem_draw.scp
index 93cadcaa1ca5..79440c00653b 100644
--- a/scp2/source/draw/registryitem_draw.scp
+++ b/scp2/source/draw/registryitem_draw.scp
@@ -1092,6 +1092,7 @@ CONDITIONAL_REGISTER_DOC_EXTENSION( Tiff,  
gid_Module_Prg_Draw_Other_Reg, tiff,
 CONDITIONAL_REGISTER_DOC_EXTENSION( Xbm,  gid_Module_Prg_Draw_Other_Reg, xbm,  
XBM,  X_BITMAP, 5, sdraw.exe, open, Draw )
 CONDITIONAL_REGISTER_DOC_EXTENSION( Xpm,  gid_Module_Prg_Draw_Other_Reg, xpm,  
XPM,  X_PIXMAP, 5, sdraw.exe, open, Draw )
 CONDITIONAL_REGISTER_DOC_EXTENSION( PCD,  gid_Module_Prg_Draw_Other_Reg, pcd,  
PCD,  KODAK_PHOTO_CD_IMAGE, 5, sdraw.exe, open, Draw )
+CONDITIONAL_REGISTER_DOC_EXTENSION( Webp, gid_Module_Prg_Draw_Other_Reg, webp, 
WEBP, WEBP, 5, sdraw.exe, open, Draw )
 
 // registering ms-visio URI scheme handler
 CONDITIONAL_REGISTER_URI_HANDLER( ms-visio, ms_visio, 
gid_Module_Prg_Draw_MSO_Reg, SELECT_VISIO )
diff --git a/solenv/sanitizers/ui/svt.suppr b/solenv/sanitizers/ui/svt.suppr
index 40c22f896163..188bd9ea0289 100644
--- a/solenv/sanitizers/ui/svt.suppr
+++ b/solenv/sanitizers/ui/svt.suppr
@@ -1,6 +1,6 @@
 svtools/uiconfig/ui/checkboxcontrol.ui://GtkCheckButton[@id='checkbox'] 
button-no-label
 svtools/uiconfig/ui/editcontrol.ui://GtkEntry[@id='entry'] no-labelled-by
-svtools/uiconfig/ui/graphicexport.ui://GtkScale[@id='compressionjpgsb'] 
no-labelled-by
+svtools/uiconfig/ui/graphicexport.ui://GtkScale[@id='compressionjpgwebpsb'] 
no-labelled-by
 svtools/uiconfig/ui/graphicexport.ui://GtkScale[@id='compressionpngsb'] 
no-labelled-by
 svtools/uiconfig/ui/graphicexport.ui://GtkLabel[@id='estsizeft'] orphan-label
 svtools/uiconfig/ui/placeedit.ui://GtkButton[@id='repositoriesRefresh'] 
button-no-label
diff --git a/svtools/inc/bitmaps.hlst b/svtools/inc/bitmaps.hlst
index 275b73c83538..5aa57db637ed 100644
--- a/svtools/inc/bitmaps.hlst
+++ b/svtools/inc/bitmaps.hlst
@@ -39,6 +39,7 @@ inline constexpr OUStringLiteral BMP_DXF_SC = 
u"res/sx03217.png";
 inline constexpr OUStringLiteral BMP_MET_SC = u"res/sx03218.png";
 inline constexpr OUStringLiteral BMP_PNG_SC = u"res/sx03219.png";
 inline constexpr OUStringLiteral BMP_SVM_SC = u"res/sx03222.png";
+inline constexpr OUStringLiteral BMP_WEBP_SC = u"res/sx03223.png";
 inline constexpr OUStringLiteral BMP_GLOBAL_DOC_SC = u"res/sx03226.png";
 inline constexpr OUStringLiteral BMP_DRAW_SC = u"res/sx03227.png";
 inline constexpr OUStringLiteral BMP_DRAWTEMPLATE_SC = u"res/sx03228.png";
@@ -85,6 +86,7 @@ inline constexpr OUStringLiteral BMP_DXF_LC = 
u"res/lx03217.png";
 inline constexpr OUStringLiteral BMP_MET_LC = u"res/lx03218.png";
 inline constexpr OUStringLiteral BMP_PNG_LC = u"res/lx03219.png";
 inline constexpr OUStringLiteral BMP_SVM_LC = u"res/lx03222.png";
+inline constexpr OUStringLiteral BMP_WEBP_LC = u"res/lx03223.png";
 inline constexpr OUStringLiteral BMP_GLOBAL_DOC_LC = u"res/lx03226.png";
 inline constexpr OUStringLiteral BMP_DRAW_LC = u"res/lx03227.png";
 inline constexpr OUStringLiteral BMP_DRAWTEMPLATE_LC = u"res/lx03228.png";
diff --git a/svtools/source/filter/exportdialog.cxx 
b/svtools/source/filter/exportdialog.cxx
index 76d90f7b8e06..2d563e02b274 100644
--- a/svtools/source/filter/exportdialog.cxx
+++ b/svtools/source/filter/exportdialog.cxx
@@ -57,6 +57,7 @@
 #define FORMAT_EMF      13
 #define FORMAT_EPS      14
 #define FORMAT_SVG      16
+#define FORMAT_WEBP     17
 
 #define UNIT_DEFAULT    -1
 #define UNIT_INCH       0
@@ -89,6 +90,8 @@ static sal_Int16 GetFilterFormat(std::u16string_view rExt)
         nFormat = FORMAT_EPS;
     else if ( rExt == u"SVG" )
         nFormat = FORMAT_SVG;
+    else if ( rExt == u"WEBP" )
+        nFormat = FORMAT_WEBP;
     return nFormat;
 }
 
@@ -293,6 +296,15 @@ uno::Sequence< beans::PropertyValue > 
ExportDialog::GetFilterData( bool bUpdateC
             pFilterOptions->WriteInt32("CompressionMode", nCheck);
         }
         break;
+
+        case FORMAT_WEBP :
+        {
+            assert(mpSbCompression);
+            pFilterOptions->WriteInt32("Quality", 
static_cast<sal_Int32>(mpSbCompression->get_value()));
+            pFilterOptions->WriteBool("Lossless", mxCbLossless->get_active());
+        }
+        break;
+
     }
 
     uno::Sequence< beans::PropertyValue > aRet( 
pFilterOptions->GetFilterData() );
@@ -582,12 +594,13 @@ ExportDialog::ExportDialog(FltCallDialogParameter& rPara,
     , mxLbResolution(m_xBuilder->weld_combo_box("resolutionlb"))
     , mxColorDepth(m_xBuilder->weld_widget("colordepth"))
     , mxLbColorDepth(m_xBuilder->weld_combo_box("colordepthlb"))
-    , mxJPGQuality(m_xBuilder->weld_widget("jpgquality"))
+    , mxJPGWEBPQuality(m_xBuilder->weld_widget("jpgwebpquality"))
     , mxPNGCompression(m_xBuilder->weld_widget("pngcompression"))
     , mxSbPngCompression(m_xBuilder->weld_scale("compressionpngsb"))
     , mxNfPngCompression(m_xBuilder->weld_spin_button("compressionpngnf"))
-    , mxSbJpgCompression(m_xBuilder->weld_scale("compressionjpgsb"))
-    , mxNfJpgCompression(m_xBuilder->weld_spin_button("compressionjpgnf"))
+    , mxSbJpgWebpCompression(m_xBuilder->weld_scale("compressionjpgwebpsb"))
+    , 
mxNfJpgWebpCompression(m_xBuilder->weld_spin_button("compressionjpgwebpnf"))
+    , mxCbLossless(m_xBuilder->weld_check_button("losslesscb"))
     , mxMode(m_xBuilder->weld_widget("mode"))
     , mxCbInterlaced(m_xBuilder->weld_check_button("interlacedcb"))
     , mxBMPCompression(m_xBuilder->weld_widget("bmpcompression"))
@@ -681,6 +694,8 @@ ExportDialog::ExportDialog(FltCallDialogParameter& rPara,
 
     mxCbInterlaced->connect_toggled( LINK( this, ExportDialog, UpdateHdl ) );
 
+    mxCbLossless->connect_toggled( LINK( this, ExportDialog, UpdateHdlLossless 
) );
+
     mxCbSaveTransparency->connect_toggled( LINK( this, ExportDialog, UpdateHdl 
) );
 
     mxModifyDimension->connect_toggled( LINK( this, ExportDialog, UpdateLock ) 
);
@@ -761,15 +776,16 @@ void ExportDialog::createFilterOptions()
             mxColorDepth->show();
 
             // Quality
-            mxJPGQuality->show();
+            mxJPGWEBPQuality->show();
             sal_Int32 nQuality = mpFilterOptionsItem->ReadInt32("Quality", 75);
             if ((nQuality < 1 ) || (nQuality > 100))
                 nQuality = 75;
-            mpSbCompression = mxSbJpgCompression.get();
-            mpNfCompression = mxNfJpgCompression.get();
+            mpSbCompression = mxSbJpgWebpCompression.get();
+            mpNfCompression = mxNfJpgWebpCompression.get();
             mpSbCompression->set_range(1, 100);
             mpNfCompression->set_range(1, 100);
             mpNfCompression->set_value(nQuality);
+            mxCbLossless->hide(); // only for WebP
         }
         break;
         case FORMAT_PNG :
@@ -852,6 +868,24 @@ void ExportDialog::createFilterOptions()
             mxRbEPSCompressionNone->set_active( nCompr != 1 );
         }
         break;
+        case FORMAT_WEBP :
+        {
+            // Quality
+            mxJPGWEBPQuality->show();
+            sal_Int32 nQuality = mpFilterOptionsItem->ReadInt32("Quality", 75);
+            if ((nQuality < 1 ) || (nQuality > 100))
+                nQuality = 75;
+            mpSbCompression = mxSbJpgWebpCompression.get();
+            mpNfCompression = mxNfJpgWebpCompression.get();
+            mpSbCompression->set_range(1, 100);
+            mpNfCompression->set_range(1, 100);
+            mpNfCompression->set_value(nQuality);
+
+            // Lossless
+            mxCbLossless->set_active(mpFilterOptionsItem->ReadBool("Lossless", 
true));
+            UpdateHdlLossless(*mxCbLossless);
+        }
+        break;
     }
 }
 
@@ -995,6 +1029,13 @@ IMPL_LINK_NOARG(ExportDialog, UpdateHdl, 
weld::Toggleable&, void)
     updateControls();
 }
 
+IMPL_LINK_NOARG(ExportDialog, UpdateHdlLossless, weld::Toggleable&, void)
+{
+    mpSbCompression->set_sensitive(!mxCbLossless->get_active());
+    mpNfCompression->set_sensitive(!mxCbLossless->get_active());
+    updateControls();
+}
+
 IMPL_LINK_NOARG(ExportDialog, UpdateLock, weld::Toggleable&, void)
 {
     if (mxModifyResolution->get_active())
diff --git a/svtools/source/filter/exportdialog.hxx 
b/svtools/source/filter/exportdialog.hxx
index 28953ee0224c..1c7c63953a16 100644
--- a/svtools/source/filter/exportdialog.hxx
+++ b/svtools/source/filter/exportdialog.hxx
@@ -104,14 +104,16 @@ private:
     std::unique_ptr<weld::Widget> mxColorDepth;
     std::unique_ptr<weld::ComboBox> mxLbColorDepth;
 
-    std::unique_ptr<weld::Widget> mxJPGQuality;
+    std::unique_ptr<weld::Widget> mxJPGWEBPQuality;
     std::unique_ptr<weld::Widget> mxPNGCompression;
 
     std::unique_ptr<weld::Scale> mxSbPngCompression;
     std::unique_ptr<weld::SpinButton> mxNfPngCompression;
 
-    std::unique_ptr<weld::Scale> mxSbJpgCompression;
-    std::unique_ptr<weld::SpinButton> mxNfJpgCompression;
+    std::unique_ptr<weld::Scale> mxSbJpgWebpCompression;
+    std::unique_ptr<weld::SpinButton> mxNfJpgWebpCompression;
+
+    std::unique_ptr<weld::CheckButton> mxCbLossless;
 
     std::unique_ptr<weld::Widget> mxMode;
     std::unique_ptr<weld::CheckButton> mxCbInterlaced;
@@ -152,6 +154,7 @@ private:
     DECL_LINK(UpdateHdlMtfSizeY, weld::SpinButton&, void);
     DECL_LINK(UpdateHdlNfResolution, weld::SpinButton&, void);
     DECL_LINK(SbCompressionUpdateHdl, weld::Scale&, void);
+    DECL_LINK(UpdateHdlLossless, weld::Toggleable&, void);
 
     DECL_LINK(OK, weld::Button&, void);
 
diff --git a/svtools/source/misc/imagemgr.cxx b/svtools/source/misc/imagemgr.cxx
index 58cba39f574f..7ac01619162e 100644
--- a/svtools/source/misc/imagemgr.cxx
+++ b/svtools/source/misc/imagemgr.cxx
@@ -153,6 +153,7 @@ SvtExtensionResIdMapping_Impl const ExtensionMap_Impl[] =
     { "url",   false, STR_DESCRIPTION_LINK,                  SvImageId::NONE },
     { "vor",   false, STR_DESCRIPTION_SOFFICE_TEMPLATE_DOC,  
SvImageId::WriterTemplate },
     { "vxd",   true,  STR_DESCRIPTION_SYSFILE,               SvImageId::NONE },
+    { "webp",  true,  STR_DESCRIPTION_GRAPHIC_DOC,           SvImageId::WEBP },
     { "wmf",   true,  STR_DESCRIPTION_GRAPHIC_DOC,           SvImageId::WMF },
     { "xls",   false, STR_DESCRIPTION_EXCEL_DOC,             SvImageId::Calc },
     { "xlt",   false, STR_DESCRIPTION_EXCEL_TEMPLATE_DOC,    
SvImageId::CalcTemplate },
@@ -568,6 +569,8 @@ static OUString GetImageNameFromList_Impl( SvImageId 
nImageId, vcl::ImageType eI
                 return BMP_TEXTFILE_LC;
             case SvImageId::TIFF:
                 return BMP_TIFF_LC;
+            case SvImageId::WEBP:
+                return BMP_WEBP_LC;
             case SvImageId::WMF:
                 return BMP_WMF_LC;
             case SvImageId::Writer:
@@ -667,6 +670,8 @@ static OUString GetImageNameFromList_Impl( SvImageId 
nImageId, vcl::ImageType eI
                 return BMP_TEXTFILE_SC;
             case SvImageId::TIFF:
                 return BMP_TIFF_SC;
+            case SvImageId::WEBP:
+                return BMP_WEBP_SC;
             case SvImageId::WMF:
                 return BMP_WMF_SC;
             case SvImageId::Writer:
diff --git a/svtools/uiconfig/ui/graphicexport.ui 
b/svtools/uiconfig/ui/graphicexport.ui
index 223dd3dd456c..27cf6d17f04e 100644
--- a/svtools/uiconfig/ui/graphicexport.ui
+++ b/svtools/uiconfig/ui/graphicexport.ui
@@ -368,12 +368,12 @@
               </packing>
             </child>
             <child>
-              <object class="GtkFrame" id="jpgquality">
+              <object class="GtkFrame" id="jpgwebpquality">
                 <property name="can-focus">False</property>
                 <property name="label-xalign">0</property>
                 <property name="shadow-type">none</property>
                 <child>
-                  <!-- n-columns=2 n-rows=1 -->
+                  <!-- n-columns=2 n-rows=2 -->
                   <object class="GtkGrid" id="grid2">
                     <property name="visible">True</property>
                     <property name="can-focus">False</property>
@@ -381,7 +381,27 @@
                     <property name="margin-top">6</property>
                     <property name="column-spacing">6</property>
                     <child>
-                      <object class="GtkSpinButton" id="compressionjpgnf">
+                      <object class="GtkCheckButton" id="losslesscb">
+                        <property name="label" translatable="yes" 
context="graphicexport|losslesscb">Lossless</property>
+                        <property name="visible">True</property>
+                        <property name="can-focus">True</property>
+                        <property name="receives-default">False</property>
+                        <property name="use-underline">True</property>
+                        <property name="active">True</property>
+                        <property name="draw-indicator">True</property>
+                        <child internal-child="accessible">
+                          <object class="AtkObject" id="losslesscb-atkobject">
+                            <property name="AtkObject::accessible-description" 
translatable="yes" context="graphicexport|extended_tip|losslesscb">Lossless 
images do not lose quality but result in larger files.</property>
+                          </object>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="left-attach">0</property>
+                        <property name="top-attach">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkSpinButton" id="compressionjpgwebpnf">
                         <property name="visible">True</property>
                         <property name="can-focus">True</property>
                         <property name="activates-default">True</property>
@@ -389,18 +409,18 @@
                         <property name="truncate-multiline">True</property>
                         <property name="adjustment">adjustment1</property>
                         <child internal-child="accessible">
-                          <object class="AtkObject" 
id="compressionjpgnf-atkobject">
-                            <property name="AtkObject::accessible-description" 
translatable="yes" context="graphicexport|extended_tip|compressionjpgnf">Sets 
the quality for the export. Choose from a low quality with minimal file size, 
up to a high quality and big file size.</property>
+                          <object class="AtkObject" 
id="compressionjpgwebpnf-atkobject">
+                            <property name="AtkObject::accessible-description" 
translatable="yes" 
context="graphicexport|extended_tip|compressionjpgwebpnf">Sets the quality for 
the export. Choose from a low quality with minimal file size, up to a high 
quality and big file size.</property>
                           </object>
                         </child>
                       </object>
                       <packing>
                         <property name="left-attach">1</property>
-                        <property name="top-attach">0</property>
+                        <property name="top-attach">1</property>
                       </packing>
                     </child>
                     <child>
-                      <object class="GtkScale" id="compressionjpgsb">
+                      <object class="GtkScale" id="compressionjpgwebpsb">
                         <property name="visible">True</property>
                         <property name="can-focus">True</property>
                         <property name="valign">center</property>
@@ -410,7 +430,7 @@
                       </object>
                       <packing>
                         <property name="left-attach">0</property>
-                        <property name="top-attach">0</property>
+                        <property name="top-attach">1</property>
                       </packing>
                     </child>
                   </object>
diff --git a/svx/source/core/graphichelper.cxx 
b/svx/source/core/graphichelper.cxx
index f98d1ac0a63d..f62b5db08eaa 100644
--- a/svx/source/core/graphichelper.cxx
+++ b/svx/source/core/graphichelper.cxx
@@ -122,6 +122,9 @@ void GraphicHelper::GetPreferredExtension( OUString& 
rExtension, const Graphic&
         case GfxLinkType::NativePdf:
             aExtension = "pdf";
             break;
+        case GfxLinkType::NativeWebp:
+            aExtension = "webp";
+            break;
         default:
             break;
     }
@@ -163,6 +166,9 @@ OUString GraphicHelper::GetImageType(const Graphic& 
rGraphic)
             case GfxLinkType::NativeBmp:
                 aGraphicTypeString = SvxResId(STR_IMAGE_BMP);
                 break;
+            case GfxLinkType::NativeWebp:
+                aGraphicTypeString = SvxResId(STR_IMAGE_WEBP);
+                break;
             default:
                 break;
         }
diff --git a/svx/source/gallery2/galtheme.cxx b/svx/source/gallery2/galtheme.cxx
index dff3696b8cd8..4a9d10e609ff 100644
--- a/svx/source/gallery2/galtheme.cxx
+++ b/svx/source/gallery2/galtheme.cxx
@@ -407,6 +407,7 @@ bool GalleryTheme::InsertGraphic(const Graphic& rGraphic, 
sal_uInt32 nInsertPos)
                 case GfxLinkType::NativeMet: nExportFormat = 
ConvertDataFormat::MET; break;
                 case GfxLinkType::NativePct: nExportFormat = 
ConvertDataFormat::PCT; break;
                 case GfxLinkType::NativeSvg: nExportFormat = 
ConvertDataFormat::SVG; break;
+                case GfxLinkType::NativeWebp: nExportFormat = 
ConvertDataFormat::WEBP; break;
                 default:
                     break;
             }
diff --git a/svx/source/xml/xmlgrhlp.cxx b/svx/source/xml/xmlgrhlp.cxx
index 0604f0f95d8e..b95130a8a658 100644
--- a/svx/source/xml/xmlgrhlp.cxx
+++ b/svx/source/xml/xmlgrhlp.cxx
@@ -690,6 +690,7 @@ OUString 
SvXMLGraphicHelper::implSaveGraphic(css::uno::Reference<css::graphic::X
                     break;
                 }
                 case GfxLinkType::NativePdf: aExtension = ".pdf"; break;
+                case GfxLinkType::NativeWebp: aExtension = ".webp"; break;
 
                 default:
                     aExtension = ".grf";
diff --git a/svx/source/xoutdev/_xoutbmp.cxx b/svx/source/xoutdev/_xoutbmp.cxx
index 8eaec8e5a5fc..cb690df32623 100644
--- a/svx/source/xoutdev/_xoutbmp.cxx
+++ b/svx/source/xoutdev/_xoutbmp.cxx
@@ -34,6 +34,7 @@ constexpr OUStringLiteral FORMAT_BMP = u"bmp";
 constexpr OUStringLiteral FORMAT_GIF = u"gif";
 constexpr OUStringLiteral FORMAT_JPG = u"jpg";
 constexpr OUStringLiteral FORMAT_PNG = u"png";
+constexpr OUStringLiteral FORMAT_WEBP = u"webp";
 
 using namespace com::sun::star;
 
@@ -182,6 +183,7 @@ ErrCode XOutBitmap::WriteGraphic( const Graphic& rGraphic, 
OUString& rFileName,
 
             case GfxLinkType::NativeJpg: aExt = FORMAT_JPG; break;
             case GfxLinkType::NativePng: aExt = FORMAT_PNG; break;
+            case GfxLinkType::NativeWebp: aExt = FORMAT_WEBP; break;
 
             default:
             break;
diff --git a/vcl/CppunitTest_vcl_filters_test.mk 
b/vcl/CppunitTest_vcl_filters_test.mk
index ab5108f51b1c..f9f8e40cca98 100644
--- a/vcl/CppunitTest_vcl_filters_test.mk
+++ b/vcl/CppunitTest_vcl_filters_test.mk
@@ -22,6 +22,7 @@ $(eval $(call 
gb_CppunitTest_add_exception_objects,vcl_filters_test, \
     vcl/qa/cppunit/graphicfilter/filters-test \
     vcl/qa/cppunit/graphicfilter/filters-tiff-test \
     vcl/qa/cppunit/graphicfilter/filters-tga-test \
+    vcl/qa/cppunit/graphicfilter/filters-webp-test \
 ))
 
 $(eval $(call gb_CppunitTest_set_include,vcl_filters_test,\
diff --git a/vcl/Executable_webpfuzzer.mk b/vcl/Executable_webpfuzzer.mk
new file mode 100644
index 000000000000..3851fbe52cd1
--- /dev/null
+++ b/vcl/Executable_webpfuzzer.mk
@@ -0,0 +1,45 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+include $(SRCDIR)/vcl/commonfuzzer.mk
+
+$(eval $(call gb_Executable_Executable,webpfuzzer))
+
+$(eval $(call gb_Executable_use_api,webpfuzzer,\
+    offapi \
+    udkapi \
+))
+
+$(eval $(call gb_Executable_use_externals,webpfuzzer,\
+       $(fuzzer_externals) \
+))
+
+$(eval $(call gb_Executable_set_include,webpfuzzer,\
+    $$(INCLUDE) \
+    -I$(SRCDIR)/vcl/inc \
+))
+
+$(eval $(call gb_Executable_use_libraries,webpfuzzer,\
+    $(fuzzer_core_libraries) \
+))
+
+$(eval $(call gb_Executable_use_static_libraries,webpfuzzer,\
+    $(fuzzer_statics) \
+))
+
+$(eval $(call gb_Executable_add_exception_objects,webpfuzzer,\
+       vcl/workben/webpfuzzer \
+))
+
+$(eval $(call gb_Executable_add_libs,webpfuzzer,\
+       $(LIB_FUZZING_ENGINE) \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/vcl/Library_vcl.mk b/vcl/Library_vcl.mk
index ebf87d7e8b70..9182f223eb93 100644
--- a/vcl/Library_vcl.mk
+++ b/vcl/Library_vcl.mk
@@ -90,6 +90,7 @@ $(eval $(call gb_Library_use_externals,vcl,\
     libeot \
     libjpeg \
     libpng \
+    libwebp \
     mdds_headers \
 ))
 
@@ -484,6 +485,8 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\
     vcl/source/filter/wmf/wmfexternal \
     vcl/source/filter/wmf/wmfwr \
     vcl/source/filter/png/pngwrite \
+    vcl/source/filter/webp/reader \
+    vcl/source/filter/webp/writer \
     vcl/source/font/DirectFontSubstitution \
     vcl/source/font/Feature \
     vcl/source/font/FeatureCollector \
diff --git a/vcl/Module_vcl.mk b/vcl/Module_vcl.mk
index efca0207b6b1..090e517b0d0a 100644
--- a/vcl/Module_vcl.mk
+++ b/vcl/Module_vcl.mk
@@ -189,6 +189,7 @@ $(eval $(call gb_Module_add_targets,vcl,\
     Executable_htmlfuzzer \
     Executable_sftfuzzer \
     Executable_dbffuzzer \
+    Executable_webpfuzzer \
 ))
 endif
 
diff --git a/vcl/inc/filter/WebpReader.hxx b/vcl/inc/filter/WebpReader.hxx
new file mode 100644
index 000000000000..fd8cc4894a26
--- /dev/null
+++ b/vcl/inc/filter/WebpReader.hxx
@@ -0,0 +1,28 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <vcl/graph.hxx>
+
+VCL_DLLPUBLIC bool ImportWebpGraphic(SvStream& rStream, Graphic& rGraphic);
+
+bool ReadWebpInfo(SvStream& rStream, Size& pixelSize, sal_uInt16& 
bitsPerPixel, bool& hasAlpha);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/filter/WebpWriter.hxx b/vcl/inc/filter/WebpWriter.hxx
new file mode 100644
index 000000000000..d3b6431c63ff
--- /dev/null
+++ b/vcl/inc/filter/WebpWriter.hxx
@@ -0,0 +1,29 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <tools/stream.hxx>
+#include <vcl/graph.hxx>
+#include <vcl/FilterConfigItem.hxx>
+
+VCL_DLLPUBLIC bool ExportWebpGraphic(SvStream& rStream, const Graphic& 
rGraphic,
+                                     FilterConfigItem* pFilterConfigItem);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/graphic/GraphicFormatDetector.hxx 
b/vcl/inc/graphic/GraphicFormatDetector.hxx
index f2f0393caeee..34a8b16a2c5d 100644
--- a/vcl/inc/graphic/GraphicFormatDetector.hxx
+++ b/vcl/inc/graphic/GraphicFormatDetector.hxx
@@ -77,6 +77,7 @@ public:
     bool checkTGA();
     bool checkMOV();
     bool checkPDF();
+    bool checkWEBP();
 };
 }
 
diff --git a/vcl/inc/graphic/UnoGraphicDescriptor.hxx 
b/vcl/inc/graphic/UnoGraphicDescriptor.hxx
index 6a233e09ae16..096b30fd694e 100644
--- a/vcl/inc/graphic/UnoGraphicDescriptor.hxx
+++ b/vcl/inc/graphic/UnoGraphicDescriptor.hxx
@@ -51,6 +51,7 @@
 #define MIMETYPE_EMF        "image/x-emf"
 #define MIMETYPE_SVG        "image/svg+xml"
 #define MIMETYPE_PDF        "application/pdf"
+#define MIMETYPE_WEBP       "image/webp"
 inline constexpr OUStringLiteral MIMETYPE_VCLGRAPHIC = u"image/x-vclgraphic";
 
 namespace comphelper { class PropertySetInfo; }
diff --git a/vcl/qa/cppunit/GraphicDescriptorTest.cxx 
b/vcl/qa/cppunit/GraphicDescriptorTest.cxx
index 652393ae9b63..865202cedbf5 100644
--- a/vcl/qa/cppunit/GraphicDescriptorTest.cxx
+++ b/vcl/qa/cppunit/GraphicDescriptorTest.cxx
@@ -34,6 +34,7 @@ class GraphicDescriptorTest : public 
test::BootstrapFixtureBase
     void testDetectGIF();
     void testDetectTIF();
     void testDetectBMP();
+    void testDetectWEBP();
 
     CPPUNIT_TEST_SUITE(GraphicDescriptorTest);
     CPPUNIT_TEST(testDetectPNG);
@@ -41,6 +42,7 @@ class GraphicDescriptorTest : public 
test::BootstrapFixtureBase
     CPPUNIT_TEST(testDetectGIF);
     CPPUNIT_TEST(testDetectTIF);
     CPPUNIT_TEST(testDetectBMP);
+    CPPUNIT_TEST(testDetectWEBP);
     CPPUNIT_TEST_SUITE_END();
 };
 
@@ -138,6 +140,20 @@ void GraphicDescriptorTest::testDetectBMP()
     CPPUNIT_ASSERT_EQUAL(MapUnit::MapMM, 
aGraphic.GetPrefMapMode().GetMapUnit());
 }
 
+void GraphicDescriptorTest::testDetectWEBP()
+{
+    SvMemoryStream aStream;
+    createBitmapAndExportForType(aStream, u"webp");
+
+    GraphicDescriptor aDescriptor(aStream, nullptr);
+    aDescriptor.Detect(true);
+
+    CPPUNIT_ASSERT_EQUAL(GraphicFileFormat::WEBP, aDescriptor.GetFileFormat());
+
+    CPPUNIT_ASSERT_EQUAL(tools::Long(100), aDescriptor.GetSizePixel().Width());
+    CPPUNIT_ASSERT_EQUAL(tools::Long(100), 
aDescriptor.GetSizePixel().Height());
+}
+
 } // namespace
 
 CPPUNIT_TEST_SUITE_REGISTRATION(GraphicDescriptorTest);
diff --git a/vcl/qa/cppunit/GraphicFormatDetectorTest.cxx 
b/vcl/qa/cppunit/GraphicFormatDetectorTest.cxx
index 264a0e8cd48d..4c16bfc82e1b 100644
--- a/vcl/qa/cppunit/GraphicFormatDetectorTest.cxx
+++ b/vcl/qa/cppunit/GraphicFormatDetectorTest.cxx
@@ -47,6 +47,7 @@ class GraphicFormatDetectorTest : public 
test::BootstrapFixtureBase
     void testDetectSVGZ();
     void testDetectPDF();
     void testDetectEPS();
+    void testDetectWEBP();
     void testMatchArray();
     void testCheckArrayForMatchingStrings();
 
@@ -67,6 +68,7 @@ class GraphicFormatDetectorTest : public 
test::BootstrapFixtureBase
     CPPUNIT_TEST(testDetectSVGZ);
     CPPUNIT_TEST(testDetectPDF);
     CPPUNIT_TEST(testDetectEPS);
+    CPPUNIT_TEST(testDetectWEBP);
     CPPUNIT_TEST(testMatchArray);
     CPPUNIT_TEST(testCheckArrayForMatchingStrings);
     CPPUNIT_TEST_SUITE_END();
@@ -312,6 +314,21 @@ void GraphicFormatDetectorTest::testDetectEPS()
     CPPUNIT_ASSERT_EQUAL(OUString("EPS"), rFormatExtension);
 }
 
+void GraphicFormatDetectorTest::testDetectWEBP()
+{
+    SvFileStream aFileStream(getFullUrl(u"TypeDetectionExample.webp"), 
StreamMode::READ);
+    vcl::GraphicFormatDetector aDetector(aFileStream, "WEBP");
+
+    CPPUNIT_ASSERT(aDetector.detect());
+    CPPUNIT_ASSERT(aDetector.checkWEBP());
+
+    aFileStream.Seek(aDetector.mnStreamPosition);
+
+    OUString rFormatExtension;
+    CPPUNIT_ASSERT(vcl::peekGraphicFormat(aFileStream, rFormatExtension, 
false));
+    CPPUNIT_ASSERT_EQUAL(OUString("WEBP"), rFormatExtension);
+}
+
 void GraphicFormatDetectorTest::testMatchArray()
 {
     std::string aString("<?xml version=\"1.0\" standalone=\"no\"?>\n"
diff --git a/vcl/qa/cppunit/GraphicTest.cxx b/vcl/qa/cppunit/GraphicTest.cxx
index 44ad1df12829..2e398c544c79 100644
--- a/vcl/qa/cppunit/GraphicTest.cxx
+++ b/vcl/qa/cppunit/GraphicTest.cxx
@@ -81,6 +81,7 @@ private:
     void testLoadXPM();
     void testLoadPCX();
     void testLoadEPS();
+    void testLoadWEBP();
 
     void testAvailableThreaded();
 
@@ -118,6 +119,7 @@ private:
     CPPUNIT_TEST(testLoadXPM);
     CPPUNIT_TEST(testLoadPCX);
     CPPUNIT_TEST(testLoadEPS);
+    CPPUNIT_TEST(testLoadWEBP);
 
     CPPUNIT_TEST(testAvailableThreaded);
 
@@ -305,7 +307,7 @@ void GraphicTest::testUnloadedGraphic()
 
 void GraphicTest::testUnloadedGraphicLoading()
 {
-    const OUString aFormats[] = { "png", "gif", "jpg", "tif" };
+    const OUString aFormats[] = { "png", "gif", "jpg", "tif", "webp" };
 
     for (OUString const& sFormat : aFormats)
     {
@@ -1310,6 +1312,14 @@ void GraphicTest::testLoadEPS()
     CPPUNIT_ASSERT_EQUAL(GraphicType::GdiMetafile, aGraphic.GetType());
 }
 
+void GraphicTest::testLoadWEBP()
+{
+    Graphic aGraphic = loadGraphic(u"TypeDetectionExample.webp");
+    CPPUNIT_ASSERT_EQUAL(GraphicType::Bitmap, aGraphic.GetType());
+    CPPUNIT_ASSERT_EQUAL(tools::Long(10), aGraphic.GetSizePixel().Width());
+    CPPUNIT_ASSERT_EQUAL(tools::Long(10), aGraphic.GetSizePixel().Height());
+}
+
 void GraphicTest::testAvailableThreaded()
 {
     Graphic jpgGraphic1 = importUnloadedGraphic(u"TypeDetectionExample.jpg");
diff --git a/vcl/qa/cppunit/data/TypeDetectionExample.webp 
b/vcl/qa/cppunit/data/TypeDetectionExample.webp
new file mode 100644
index 000000000000..e85ae121637b
Binary files /dev/null and b/vcl/qa/cppunit/data/TypeDetectionExample.webp 
differ
diff --git a/vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossless.webp 
b/vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossless.webp
new file mode 100644
index 000000000000..abb67cc5f4b6
Binary files /dev/null and 
b/vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossless.webp differ
diff --git a/vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossy.webp 
b/vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossy.webp
new file mode 100644
index 000000000000..c587b1bb22c0
Binary files /dev/null and 
b/vcl/qa/cppunit/graphicfilter/data/webp/alpha_lossy.webp differ
diff --git a/vcl/qa/cppunit/graphicfilter/data/webp/fail/.gitignore 
b/vcl/qa/cppunit/graphicfilter/data/webp/fail/.gitignore
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/vcl/qa/cppunit/graphicfilter/data/webp/indeterminate/.gitignore 
b/vcl/qa/cppunit/graphicfilter/data/webp/indeterminate/.gitignore
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossless.webp 
b/vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossless.webp
new file mode 100644
index 000000000000..b22ebc3b28bb
Binary files /dev/null and 
b/vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossless.webp differ
diff --git a/vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossy.webp 
b/vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossy.webp
new file mode 100644
index 000000000000..c118febb0e9a
Binary files /dev/null and 
b/vcl/qa/cppunit/graphicfilter/data/webp/noalpha_lossy.webp differ
diff --git a/vcl/qa/cppunit/graphicfilter/data/webp/pass/.gitignore 
b/vcl/qa/cppunit/graphicfilter/data/webp/pass/.gitignore
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/vcl/qa/cppunit/graphicfilter/filters-test.cxx 
b/vcl/qa/cppunit/graphicfilter/filters-test.cxx
index 22078cf9de65..f10de06fc837 100644
--- a/vcl/qa/cppunit/graphicfilter/filters-test.cxx
+++ b/vcl/qa/cppunit/graphicfilter/filters-test.cxx
@@ -145,6 +145,8 @@ void VclFiltersTest::testExportImport()
     checkExportImport(u"bmp");
     fprintf(stderr, "Check ExportImport TIF\n");
     checkExportImport(u"tif");
+    fprintf(stderr, "Check ExportImport WEBP\n");
+    checkExportImport(u"webp");
 }
 
 void VclFiltersTest::testCVEs()
diff --git a/vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx 
b/vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx
new file mode 100644
index 000000000000..90528199c0ba
--- /dev/null
+++ b/vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx
@@ -0,0 +1,203 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <unotest/filters-test.hxx>
+#include <test/bootstrapfixture.hxx>
+#include <vcl/FilterConfigItem.hxx>
+#include <bitmap/BitmapWriteAccess.hxx>
+#include <tools/stream.hxx>
+#include <vcl/graph.hxx>
+#include <vcl/graphicfilter.hxx>
+#include <graphic/GraphicFormatDetector.hxx>
+#include <filter/WebpReader.hxx>
+#include <comphelper/propertyvalue.hxx>
+
+using namespace css;
+
+/* Implementation of Filters test */
+
+class WebpFilterTest : public test::FiltersTest, public test::BootstrapFixture
+{
+public:
+    WebpFilterTest()
+        : BootstrapFixture(true, false)
+    {
+    }
+
+    virtual bool load(const OUString&, const OUString& rURL, const OUString&, 
SfxFilterFlags,
+                      SotClipboardFormatId, unsigned int) override;
+
+    /**
+     * Ensure CVEs remain unbroken
+     */
+    void testCVEs();
+
+    void testRoundtripLossless();
+    void testRoundtripLossy();
+    void testReadAlphaLossless();
+    void testReadAlphaLossy();
+    void testReadNoAlphaLossless();
+    void testReadNoAlphaLossy();
+
+    CPPUNIT_TEST_SUITE(WebpFilterTest);
+    CPPUNIT_TEST(testCVEs);
+    CPPUNIT_TEST(testRoundtripLossless);
+    CPPUNIT_TEST(testRoundtripLossy);
+    CPPUNIT_TEST(testReadAlphaLossless);
+    CPPUNIT_TEST(testReadAlphaLossy);
+    CPPUNIT_TEST(testReadNoAlphaLossless);
+    CPPUNIT_TEST(testReadNoAlphaLossy);
+    CPPUNIT_TEST_SUITE_END();
+
+private:
+    void testRoundtrip(bool lossy);
+    void testRead(bool lossy, bool alpha);
+};
+
+bool WebpFilterTest::load(const OUString&, const OUString& rURL, const 
OUString&, SfxFilterFlags,
+                          SotClipboardFormatId, unsigned int)
+{
+    SvFileStream aFileStream(rURL, StreamMode::READ);
+    Graphic aGraphic;
+    return ImportWebpGraphic(aFileStream, aGraphic);
+}
+
+void WebpFilterTest::testCVEs()
+{
+#ifndef DISABLE_CVE_TESTS
+    testDir(OUString(), 
m_directories.getURLFromSrc(u"/vcl/qa/cppunit/graphicfilter/data/webp/"));
+#endif
+}
+
+void WebpFilterTest::testRoundtripLossless() { testRoundtrip(false); }
+
+void WebpFilterTest::testRoundtripLossy() { testRoundtrip(true); }
+
+void WebpFilterTest::testRoundtrip(bool lossy)
+{
+    // Do not use just 2x2, lossy saving would change colors.
+    Bitmap aBitmap(Size(20, 20), vcl::PixelFormat::N24_BPP);
+    AlphaMask aAlpha(Size(20, 20));
+    {
+        BitmapScopedWriteAccess pAccess(aBitmap);
+        pAccess->SetFillColor(COL_WHITE);
+        pAccess->FillRect(tools::Rectangle(Point(0, 0), Size(10, 10)));
+        pAccess->SetFillColor(COL_BLACK);
+        pAccess->FillRect(tools::Rectangle(Point(10, 0), Size(10, 10)));
+        pAccess->SetFillColor(COL_LIGHTRED);
+        pAccess->FillRect(tools::Rectangle(Point(0, 10), Size(10, 10)));
+        pAccess->SetFillColor(COL_BLUE);
+        pAccess->FillRect(tools::Rectangle(Point(10, 10), Size(10, 10)));
+        AlphaScopedWriteAccess pAccessAlpha(aAlpha);
+        pAccessAlpha->SetFillColor(BitmapColor(0)); // opaque
+        pAccessAlpha->FillRect(tools::Rectangle(Point(0, 0), Size(10, 10)));
+        pAccessAlpha->FillRect(tools::Rectangle(Point(10, 0), Size(10, 10)));
+        pAccessAlpha->FillRect(tools::Rectangle(Point(0, 10), Size(10, 10)));
+        pAccessAlpha->SetFillColor(BitmapColor(64, 64, 64));
+        pAccessAlpha->FillRect(tools::Rectangle(Point(10, 10), Size(10, 10)));
+    }
+    BitmapEx aBitmapEx(aBitmap, aAlpha);
+
+    SvMemoryStream aStream;
+    GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+    sal_uInt16 nFilterFormat = 
rFilter.GetExportFormatNumberForShortName(u"webp");
+    css::uno::Sequence<css::beans::PropertyValue> aFilterData{
+        comphelper::makePropertyValue("Lossless", !lossy),
+        comphelper::makePropertyValue("Quality", sal_Int32(100))
+    };
+    rFilter.ExportGraphic(Graphic(aBitmapEx), "none", aStream, nFilterFormat, 
&aFilterData);
+    aStream.Seek(STREAM_SEEK_TO_BEGIN);
+
+    Graphic aGraphic;
+    ErrCode bResult = rFilter.ImportGraphic(aGraphic, "none", aStream);
+    CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, bResult);
+    CPPUNIT_ASSERT_EQUAL(GfxLinkType::NativeWebp, 
aGraphic.GetGfxLink().GetType());
+    BitmapEx aResultBitmap = aGraphic.GetBitmapEx();
+    CPPUNIT_ASSERT_EQUAL(Size(20, 20), aResultBitmap.GetSizePixel());
+    CPPUNIT_ASSERT(aResultBitmap.IsAlpha());
+
+    {
+        Bitmap tmpBitmap = aResultBitmap.GetBitmap();
+        Bitmap::ScopedReadAccess pAccess(tmpBitmap);
+        // Note that x,y are swapped.
+        CPPUNIT_ASSERT_EQUAL(COL_WHITE, Color(pAccess->GetPixel(0, 0)));
+        CPPUNIT_ASSERT_EQUAL(COL_BLACK, Color(pAccess->GetPixel(0, 19)));
+        if (lossy)
+        {
+            CPPUNIT_ASSERT_LESS(sal_uInt16(3),
+                                pAccess->GetPixel(19, 
0).GetColorError(COL_LIGHTRED));
+            CPPUNIT_ASSERT_LESS(sal_uInt16(3), pAccess->GetPixel(19, 
19).GetColorError(COL_BLUE));
+        }
+        else
+        {
+            CPPUNIT_ASSERT_EQUAL(COL_LIGHTRED, Color(pAccess->GetPixel(19, 
0)));
+            CPPUNIT_ASSERT_EQUAL(COL_BLUE, Color(pAccess->GetPixel(19, 19)));
+        }
+        AlphaMask tmpAlpha = aResultBitmap.GetAlpha();
+        AlphaMask::ScopedReadAccess pAccessAlpha(tmpAlpha);
+        CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(0, 0));
+        CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(0, 19));
+        CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(19, 0));
+        CPPUNIT_ASSERT_EQUAL(sal_uInt8(64), pAccessAlpha->GetPixelIndex(19, 
19));
+    }
+
+    aStream.Seek(STREAM_SEEK_TO_BEGIN);
+    vcl::GraphicFormatDetector aDetector(aStream, "");
+
+    CPPUNIT_ASSERT_EQUAL(true, aDetector.detect());
+    CPPUNIT_ASSERT_EQUAL(true, aDetector.checkWEBP());
+    CPPUNIT_ASSERT_EQUAL(OUString(u"WEBP"), aDetector.msDetectedFormat);
+}
+
+void WebpFilterTest::testReadAlphaLossless() { testRead(false, true); }
+
+void WebpFilterTest::testReadAlphaLossy() { testRead(true, true); }
+
+void WebpFilterTest::testReadNoAlphaLossless() { testRead(false, false); }
+
+void WebpFilterTest::testReadNoAlphaLossy() { testRead(true, false); }
+
+void WebpFilterTest::testRead(bool lossy, bool alpha)
+{
+    // Read a file created in GIMP and check it's read correctly.
+    OUString file = 
m_directories.getURLFromSrc(u"/vcl/qa/cppunit/graphicfilter/data/webp/")
+                    + (alpha ? u"alpha" : u"noalpha") + "_" + (lossy ? 
u"lossy" : u"lossless")
+                    + ".webp";
+    SvFileStream aFileStream(file, StreamMode::READ);
+    Graphic aGraphic;
+    GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+    ErrCode bResult = rFilter.ImportGraphic(aGraphic, "none", aFileStream);
+    CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, bResult);
+    CPPUNIT_ASSERT_EQUAL(GfxLinkType::NativeWebp, 
aGraphic.GetGfxLink().GetType());
+    BitmapEx aResultBitmap = aGraphic.GetBitmapEx();
+    CPPUNIT_ASSERT_EQUAL(Size(10, 10), aResultBitmap.GetSizePixel());
+    CPPUNIT_ASSERT_EQUAL(alpha, aResultBitmap.IsAlpha());
+
+    {
+        Bitmap tmpBitmap = aResultBitmap.GetBitmap();
+        Bitmap::ScopedReadAccess pAccess(tmpBitmap);
+        // Note that x,y are swapped.
+        if (lossy)
+            CPPUNIT_ASSERT_LESS(sal_uInt16(2), pAccess->GetPixel(0, 
0).GetColorError(COL_LIGHTRED));
+        else
+            CPPUNIT_ASSERT_EQUAL(COL_LIGHTRED, Color(pAccess->GetPixel(0, 0)));
+        CPPUNIT_ASSERT_EQUAL(COL_LIGHTBLUE, Color(pAccess->GetPixel(9, 9)));
+        if (alpha)
+        {
+            AlphaMask tmpAlpha = aResultBitmap.GetAlpha();
+            AlphaMask::ScopedReadAccess pAccessAlpha(tmpAlpha);
+            CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(0, 
0));
+            CPPUNIT_ASSERT_EQUAL(sal_uInt8(255), 
pAccessAlpha->GetPixelIndex(0, 9));
+        }
+    }
+}
+
+CPPUNIT_TEST_SUITE_REGISTRATION(WebpFilterTest);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/FilterConfigCache.cxx 
b/vcl/source/filter/FilterConfigCache.cxx
index 370e8cffed8b..3430d0251cd7 100644
--- a/vcl/source/filter/FilterConfigCache.cxx
+++ b/vcl/source/filter/FilterConfigCache.cxx
@@ -41,10 +41,10 @@ using namespace ::com::sun::star::configuration ;
 
 const char* 
FilterConfigCache::FilterConfigCacheEntry::InternalPixelFilterNameList[] =
 {
-    IMP_BMP, IMP_GIF, IMP_PNG, IMP_JPEG, IMP_TIFF,
+    IMP_BMP, IMP_GIF, IMP_PNG, IMP_JPEG, IMP_TIFF, IMP_WEBP,
     IMP_XBM, IMP_XPM, IMP_TGA, IMP_PICT, IMP_MET, IMP_RAS,
     IMP_PCX, IMP_MOV, IMP_PSD, IMP_PCD,  IMP_PBM, IMP_DXF,
-    EXP_BMP, EXP_GIF, EXP_PNG, EXP_JPEG, EXP_TIFF,
+    EXP_BMP, EXP_GIF, EXP_PNG, EXP_JPEG, EXP_TIFF, EXP_WEBP,
     nullptr
 };
 
@@ -226,6 +226,8 @@ const char* 
FilterConfigCache::InternalFilterListForSvxLight[] =
     "xpm","1","SVIXPM",
     "svg","1","SVISVG",
     "svg","2","SVESVG",
+    "webp","1","SVIWEBP",
+    "webp","2","SVEWEBP",
     nullptr
 };
 
diff --git a/vcl/source/filter/GraphicFormatDetector.cxx 
b/vcl/source/filter/GraphicFormatDetector.cxx
index 6c8df32a456e..2dddcfa0f9ae 100644
--- a/vcl/source/filter/GraphicFormatDetector.cxx
+++ b/vcl/source/filter/GraphicFormatDetector.cxx
@@ -274,6 +274,16 @@ bool peekGraphicFormat(SvStream& rStream, OUString& 
rFormatExtension, bool bTest
         }
     }
 
+    if (!bTest || rFormatExtension.startsWith("WEBP"))
+    {
+        bSomethingTested = true;
+        if (aDetector.checkWEBP())
+        {
+            rFormatExtension = aDetector.msDetectedFormat;
+            return true;
+        }
+    }
+
     return bTest && !bSomethingTested;
 }
 
@@ -816,6 +826,18 @@ bool GraphicFormatDetector::checkPDF()
     return false;
 }
 
+bool GraphicFormatDetector::checkWEBP()
+{
+    if (maFirstBytes[0] == 'R' && maFirstBytes[1] == 'I' && maFirstBytes[2] == 
'F'
+        && maFirstBytes[3] == 'F' && maFirstBytes[8] == 'W' && maFirstBytes[9] 
== 'E'
+        && maFirstBytes[10] == 'B' && maFirstBytes[11] == 'P')
+    {
+        msDetectedFormat = "WEBP";
+        return true;
+    }
+    return false;
+}
+
 } // vcl namespace
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/graphicfilter.cxx 
b/vcl/source/filter/graphicfilter.cxx
index ae04ede2dacf..6e486035b777 100644
--- a/vcl/source/filter/graphicfilter.cxx
+++ b/vcl/source/filter/graphicfilter.cxx
@@ -64,6 +64,8 @@
 #include <filter/GifWriter.hxx>
 #include <filter/BmpReader.hxx>
 #include <filter/BmpWriter.hxx>
+#include <filter/WebpReader.hxx>
+#include <filter/WebpWriter.hxx>
 #include <osl/module.hxx>
 #include <com/sun/star/uno/Reference.h>
 #include <com/sun/star/awt/Size.hpp>
@@ -82,6 +84,7 @@
 #include <memory>
 #include <mutex>
 #include <string_view>
+#include <o3tl/string_view.hxx>
 #include <vcl/TypeSerializer.hxx>
 
 #include "FilterConfigCache.hxx"
@@ -90,6 +93,24 @@
 #include <graphic/GraphicFormatDetector.hxx>
 #include <graphic/GraphicReader.hxx>
 
+// Support for GfxLinkType::NativeWebp is so far disabled,
+// as enabling it would write .webp images e.g. to .odt documents,
+// making those images unreadable for older readers. So for now
+// disable the support so that .webp images will be written out as .png,
+// and somewhen later enable the support unconditionally.
+static bool supportNativeWebp()
+{
+    const char* const testname = getenv("LO_TESTNAME");
+    if(testname == nullptr)
+        return false;
+    // Enable support only for those unittests that test it.
+    if( 
std::string_view("_anonymous_namespace___GraphicTest__testUnloadedGraphicLoading_")
 == testname
+        || std::string_view("VclFiltersTest__testExportImport_") == testname
+        || o3tl::starts_with(std::string_view(testname), "WebpFilterTest__"))
+        return true;
+    return false;
+}
+
 static std::vector< GraphicFilter* > gaFilterHdlList;
 
 static std::mutex& getListMutex()
@@ -899,6 +920,13 @@ Graphic GraphicFilter::ImportUnloadedGraphic(SvStream& 
rIStream, sal_uInt64 size
         {
             eLinkType = GfxLinkType::NativeMet;
         }
+        else if (aFilterName.equalsIgnoreAsciiCase(IMP_WEBP))
+        {
+            if(supportNativeWebp())
+                eLinkType = GfxLinkType::NativeWebp;
+            else
+                nStatus = ERRCODE_GRFILTER_FILTERERROR;
+        }
         else
         {
             nStatus = ERRCODE_GRFILTER_FILTERERROR;
@@ -1305,6 +1333,18 @@ ErrCode GraphicFilter::readDXF(SvStream & rStream, 
Graphic & rGraphic)
         return ERRCODE_GRFILTER_FILTERERROR;
 }
 
+ErrCode GraphicFilter::readWEBP(SvStream & rStream, Graphic & rGraphic, 
GfxLinkType & rLinkType)
+{
+    if (ImportWebpGraphic(rStream, rGraphic))
+    {
+        if(supportNativeWebp())
+            rLinkType = GfxLinkType::NativeWebp;
+        return ERRCODE_NONE;
+    }
+    else
+        return ERRCODE_GRFILTER_FILTERERROR;
+}
+
 ErrCode GraphicFilter::ImportGraphic( Graphic& rGraphic, const OUString& 
rPath, SvStream& rIStream,
                                      sal_uInt16 nFormat, sal_uInt16* 
pDeterminedFormat, GraphicFilterImportFlags nImportFlags,
                                      const css::uno::Sequence< 
css::beans::PropertyValue >* /*pFilterData*/,
@@ -1455,6 +1495,10 @@ ErrCode GraphicFilter::ImportGraphic( Graphic& rGraphic, 
const OUString& rPath,
         {
             nStatus = readDXF(rIStream, rGraphic);
         }
+        else if (aFilterName.equalsIgnoreAsciiCase(IMP_WEBP))
+        {
+            nStatus = readWEBP(rIStream, rGraphic, eLinkType);
+        }
         else
             nStatus = ERRCODE_GRFILTER_FILTERERROR;
     }
@@ -1840,6 +1884,14 @@ ErrCode GraphicFilter::ExportGraphic( const Graphic& 
rGraphic, const OUString& r
                     }
                 }
             }
+            else if (aFilterName.equalsIgnoreAsciiCase(EXP_WEBP))
+            {
+                if (!ExportWebpGraphic(rOStm, aGraphic, &aConfigItem))
+                    nStatus = ERRCODE_GRFILTER_FORMATERROR;
+
+                if( rOStm.GetError() )
+                    nStatus = ERRCODE_GRFILTER_IOERROR;
+            }
             else
                 nStatus = ERRCODE_GRFILTER_FILTERERROR;
     }
@@ -1882,6 +1934,7 @@ IMPL_LINK( GraphicFilter, FilterCallback, ConvertData&, 
rData, bool )
         case ConvertDataFormat::WMF: aShortName = WMF_SHORTNAME; break;
         case ConvertDataFormat::EMF: aShortName = EMF_SHORTNAME; break;
         case ConvertDataFormat::SVG: aShortName = SVG_SHORTNAME; break;
+        case ConvertDataFormat::WEBP: aShortName = WEBP_SHORTNAME; break;
 
         default:
         break;
diff --git a/vcl/source/filter/graphicfilter2.cxx 
b/vcl/source/filter/graphicfilter2.cxx
index 0360c51d3347..5f73d570d9f6 100644
--- a/vcl/source/filter/graphicfilter2.cxx
+++ b/vcl/source/filter/graphicfilter2.cxx
@@ -25,6 +25,7 @@
 #include <vcl/outdev.hxx>
 #include <vcl/graphicfilter.hxx>
 #include <unotools/ucbstreamhelper.hxx>
+#include <filter/WebpReader.hxx>
 #include "graphicfilter_internal.hxx"
 
 #define DATA_SIZE           640
@@ -87,6 +88,7 @@ bool GraphicDescriptor::Detect( bool bExtendedInfo )
         else if ( ImpDetectPSD( rStm, bExtendedInfo ) ) bRet = true;
         else if ( ImpDetectEPS( rStm, bExtendedInfo ) ) bRet = true;
         else if ( ImpDetectPCD( rStm, bExtendedInfo ) ) bRet = true;
+        else if ( ImpDetectWEBP( rStm, bExtendedInfo ) ) bRet = true;
 
         rStm.SetEndian( nOldFormat );
     }
@@ -1142,6 +1144,36 @@ bool GraphicDescriptor::ImpDetectSVG( SvStream& 
/*rStm*/, bool /*bExtendedInfo*/
     return bRet;
 }
 
+bool GraphicDescriptor::ImpDetectWEBP( SvStream& rStm, bool bExtendedInfo )
+{
+    sal_uInt32  nTemp32 = 0;
+    bool    bRet = false;
+
+    sal_Int32 nStmPos = rStm.Tell();
+    rStm.SetEndian( SvStreamEndian::BIG );
+    rStm.ReadUInt32( nTemp32 );
+
+    if ( nTemp32 == 0x52494646 )
+    {
+        rStm.ReadUInt32( nTemp32 ); // skip
+        rStm.ReadUInt32( nTemp32 );
+        if ( nTemp32 == 0x57454250 )
+        {
+            nFormat = GraphicFileFormat::WEBP;
+            bRet = true;
+
+            if ( bExtendedInfo )
+            {
+                rStm.Seek(nStmPos);
+                ReadWebpInfo(rStm, aPixSize, nBitsPerPixel, bIsAlpha );
+                bIsTransparent = bIsAlpha;
+            }
+        }
+    }
+    rStm.Seek( nStmPos );
+    return bRet;
+}
+
 OUString GraphicDescriptor::GetImportFormatShortName( GraphicFileFormat 
nFormat )
 {
     const char *pKeyName = nullptr;
@@ -1171,6 +1203,7 @@ OUString GraphicDescriptor::GetImportFormatShortName( 
GraphicFileFormat nFormat
         case GraphicFileFormat::WMF :   pKeyName = "wmf";   break;
         case GraphicFileFormat::EMF :   pKeyName = "emf";   break;
         case GraphicFileFormat::SVG :   pKeyName = "svg";   break;
+        case GraphicFileFormat::WEBP :  pKeyName = "webp";   break;
         default: assert(false);
     }
 
diff --git a/vcl/source/filter/webp/reader.cxx 
b/vcl/source/filter/webp/reader.cxx
new file mode 100644
index 000000000000..e8c885053965
--- /dev/null
+++ b/vcl/source/filter/webp/reader.cxx
@@ -0,0 +1,318 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <memory>
+#include <vcl/graph.hxx>
+#include <tools/stream.hxx>
+#include <filter/WebpReader.hxx>
+#include <bitmap/BitmapWriteAccess.hxx>
+#include <salinst.hxx>
+#include <sal/log.hxx>
+#include <unotools/configmgr.hxx>
+#include <svdata.hxx>
+
+#include <webp/decode.h>
+
+static bool readWebpInfo(SvStream& stream, std::vector<uint8_t>& data,
+                         WebPBitstreamFeatures& features)
+{
+    for (;;)
+    {
+        // Read 4096 (more) bytes.
+        size_t lastSize = data.size();
+        data.resize(data.size() + 4096);
+        sal_Size nBytesRead = stream.ReadBytes(data.data() + lastSize, 4096);
+        if (nBytesRead <= 0)
+            return false;
+        data.resize(lastSize + nBytesRead);
+        int status = WebPGetFeatures(data.data(), data.size(), &features);
+        if (status == VP8_STATUS_OK)
+            break;
+        if (status == VP8_STATUS_NOT_ENOUGH_DATA)
+            continue; // Try again with 4096 more bytes read.
+        return false;
+    }
+    return true;
+}
+
+static bool readWebp(SvStream& stream, Graphic& graphic)
+{
+    WebPDecoderConfig config;
+    if (!WebPInitDecoderConfig(&config))
+    {
+        SAL_WARN("vcl.filter.webp", "WebPInitDecoderConfig() failed");
+        return false;
+    }
+    // This unique_ptr is here just to ensure WebPFreeDecBuffer() is called at 
the end,
+    // it doesn't actually own the data as such.
+    std::unique_ptr<WebPDecBuffer, decltype(&WebPFreeDecBuffer)> 
freeBuffer(&config.output,
+                                                                            
WebPFreeDecBuffer);
+    std::vector<uint8_t> data;
+    if (!readWebpInfo(stream, data, config.input))
+        return false;
+    // Here various parts of 'config' can be altered if wanted.
+    const int& width = config.input.width;
+    const int& height = config.input.height;
+    const int& has_alpha = config.input.has_alpha;
+
+    if (width > SAL_MAX_INT32 / 8 || height > SAL_MAX_INT32 / 8)
+        return false; // avoid overflows later
+

... etc. - the rest is truncated

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