1952751 - PDF viewer dark mode

Status: RESOLVED INVALID

(Firefox :: PDF Viewer, defect)

Description

[Roberto]

Attachment: Screenshot 2025-03-09 193239.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0

Steps to reproduce:

Open a PDF file

Actual results:

Background of the pages is black making black text invisible

Expected results:

Background of the pages remain white even when dark mode/black theme is selected

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::PDF Viewer' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Marco Castelluccio [:marco]]

There's no option (yet) in our PDF viewer to turn dark mode on. Do you have some extension installed that is doing this?

Comment 3

[Roberto]

(In reply to Marco Castelluccio [:marco] from comment #2)

There's no option (yet) in our PDF viewer to turn dark mode on. Do you have some extension installed that is doing this?

I'm using the default browser theme with websites automatic aspect. On windows 11 with bulit-in dark mode.

Comment 4

[Jonas Jenwald [:Snuffleupagus]]

This may be related to https://github.com/mozilla/pdf.js/issues/19626 and https://github.com/mozilla/pdf.js/issues/19627, where it's suggested that a graphics driver update caused this and that a reboot fixed the problem.

Comment 5

[Roberto]

I can confirm, now it's working as expected.