https://bugs.kde.org/show_bug.cgi?id=499471
Bug ID: 499471
Summary: File bloat and data leakage
Classification: Applications
Product: okular
Version: 22.12.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: PDF backend
Assignee: okular-devel@kde.org
Reporter: quaz...@posteo.de
Target Milestone: ---
Created attachment 177933
--> https://bugs.kde.org/attachment.cgi?id=177933&action=edit
A PDF document with a form, only default content, created with LibreOffice.
SUMMARY
Saving PDF files with forms a) increases the file size, potentially a lot and
b) leaks history information.
When PDF files with filled forms are stored, every single keystroke in those
forms is saved. So for example, when I enter the text "test1234", there will be
PDF commands for all of: "t", "te", "tes", .... "test123", "test1234".
Especially for larger texts, this can significantly increase file size, memory
and CPU usage and make some documents even unprintable (if the printer cannot
handle these commands).
STEPS TO REPRODUCE
1. Open the attached
2.
3.
OBSERVED RESULT
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma:
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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