https://bugs.freedesktop.org/show_bug.cgi?id=74670
Priority: medium
Bug ID: 74670
Assignee: [email protected]
Summary: Saving a pptx in Impress as .opd or pptx more than
quadruples file-size (due to copies of images)
Severity: normal
Classification: Unclassified
OS: All
Reporter: [email protected]
Hardware: Other
Status: UNCONFIRMED
Version: 4.2.0.4 release
Component: Presentation
Product: LibreOffice
Created attachment 93600
--> https://bugs.freedesktop.org/attachment.cgi?id=93600&action=edit
Internal file listing of MSO.pptx, LO.pptx and LO.odp
I received a presentation save in .pptx format by MS Office 2010:
1,4M Feb 7 11:28 mo_save_as_pptx.pptx
I opened it in Impress and then saved it as a .pptx file without making any
changes. The resulting file is more than four times as large:
6,5M Feb 7 12:11 lo_save_as_pptx.pptx
Saving the same file as a .odp file without making any changes results in a
file that is four times smaller than the original.
368K Feb 7 14:15 lo_save_as_odp.odp
So it seems that Libre Office can import the .pptx file correctly but can not
write it out correctly as a .pptx i.e. writing to .odp seems fine.
Examining the resulting files reveals that when Impress writes out a .pptx file
many of the images are copies of the images used in the presentation (logos,
backgrounds, etc).
Please see the attached archive for the file-listing of each of the three files
i.e. MS Office .pptx, LibreOffice .pptx and LibreOffice .odp.
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