https://bugs.documentfoundation.org/show_bug.cgi?id=148295

tmacalp <[email protected]> changed:

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--- Comment #8 from tmacalp <[email protected]> ---
I believe I ran into this bug today using
Version: 24.8.4.2 (X86_64) / LibreOffice Community
Build ID: bb3cfa12c7b1bf994ecc5649a80400d06cd71002
CPU threads: 72; OS: Linux 4.18; UI render: default; VCL: x11
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: threaded

* This seems to affect exif-rotated images and is likely a wide-spread issue. 
Recent Samsung phones(tested on S22 and A52) take portrait photos as landscape
and just use EXIF metadata to tell the viewer to rotate the image.

* When LibreOffice inserts these images, it takes forever because it is
CONVERTING THEM INTO PNG.  This blows up the drawing size, turning a 3.5MB
image into a 12.6MB drawing.  And that was a single image!

* You can verify the image has been converted into PNG by right-clicking on the
image in Draw/Writer and clicking "Compress...".  You'll see its "Type" under
"Image Information" is now a PNG image, not JPG.

* This affects not only Writer, but Draw, Calc, and any other LO component when
using Insert -> Image


Note: 
* It only converts to PNG if I use Image -> Insert.  I don't experience this
issue if I drag and drop an image from another application (file-manager, image
viewer, copy/paste).  When I drag/drop from another application it ignores the
rotation EXIF metadata and inserts the image un-rotated, but at least keeps it
as a JPG.

* In the "Compress..." dialog, you can change the image back to JPG compression
to reduce file size.

* If you run "jhead -autorot" on the images before-hand, you can apply the
rotation and avoid LibreOffice converting them into PNG.

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