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when i open a pdf it is transparent and i can see my desktop wallpaper behind it making it hard to read

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when i try to open a PDF it is transparent and i can see the wallpaper behind it this makes it very hard to read

when i try to open a PDF it is transparent and i can see the wallpaper behind it this makes it very hard to read

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Try to disable hardware acceleration in Firefox.


Try to disable transparency in Windows.

Right click in a free space on your desktop.
Left click on Personalization.
There are four options at the bottom of the screen, choose "Window Color and Appearance".
Select a border color
Uncheck: "Enable transparency"

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Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe mode start window or otherwise make changes.