Bug 502807

Summary: Show transparency in a pdf file
Product: [Applications] okular Reporter: bronko <c1_kde_bugtrack3r>
Component: PDF backendAssignee: Okular developers <okular-devel>
Status: REPORTED ---    
Severity: wishlist    
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Sample pdf with transparent background

Description bronko 2025-04-14 20:24:54 UTC
Created attachment 180267 [details]
Sample pdf with transparent background

I would like to have an option in the settings or the toolbar to actually show transparent parts in a pdf file (like a checkered background like most programs do).


STEPS TO REPRODUCE
1. Open pdf with a transparent background (see attachment)

OBSERVED RESULT
Transparency in the PDF file is shown as a white background color.

EXPECTED RESULT
Show the transparency using a checkered background (optional setting, the default should still be white).

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.9.0

ADDITIONAL INFORMATION
Background: I was reviewing a pdf file that was sent to me for printing and the file had a transparent background so only the text/logo would be printed and not a white background around it.
Hint: Use gimp to import the file and in the import dialog unclick "Fill transparent areas with white" to show the transparent background.