Change website appearance settings in Firefox | Firefox Help
May 9, 2025 · When you visit a website, its appearance changes to match your browser's theme. If you set a light theme for Firefox in your browser's preferences and then set a dark theme from the …
Using Dark Theme in Firefox for Android - Mozilla Support
Aug 19, 2025 · Using Dark Theme in Firefox for Android Firefox for Android Firefox for Android Last updated: 8/19/25 14% of users voted this helpful You can change the look of your Firefox app at any …
How to set PDF viewer in firefox to dark mode again (after it stopped ...
Dec 20, 2023 · This set the background of pdf viewer to black/dark gray. This has worked for years until recently when the pdf viewer switched to light mode again (pic 1). I checked the about:config settings …
Dark mode broken after update - Mozilla Support
Jul 22, 2025 · Now, the bookmarks bar, toolbar, and the tabs (everything above the displayed page), as well as the menu, bookmarks menu, and sidebar, are in light mode even though I have dark mode …
Dark mode for iCloud Notes in Firefox - Mozilla Support
Apr 24, 2024 · Hi, I have Windows OS and use Firefox as my main browser. Firefox settings are set for dark mode and it works in google.com etc, but when I open iCloud Notes, it's full white and not in …
Dark mode in all firefox browsing sites do not work now
Nov 1, 2021 · Hi, I am using the dark mode in firefox which is god sent boon to persons having glaucoma, with dark mode in firefox and dark reader add on. This was going well and after a recent …
Force the built-in PDF reader to dark mode in Firefox 81 (desktop)
Sep 28, 2020 · What didn't help me: Dark Reader extension - this inverts the colors of the PDF's pages, not the reader's UI setting ui.systemUsesDarkTheme to 1 - this changes the UI theme entirely Is …
New in Thunderbird Desktop | Thunderbird Help - Mozilla Support
Thunderbird now automatically displays your messages in dark mode when enabled in your operating system settings. If there are display issues with a message in dark mode, you can disable dark mode …
Firefox Dark theme suddenly started forcing web sites to use dark ...
Nov 6, 2021 · What I have tried so far: set ui.systemUsesDarkTheme to 0 set browser.in -content.dark-mode to false Please help me disable Firefox requesting dark websites while I still use the dark …
Firefox stuck in dark mode with a custom theme - Mozilla Support
Jan 20, 2022 · Recently, my windows 10 pro firefox started going into dark mode all of a sudden without me changing ANYTHING. The system theme and everything else stays the same. Then about 5 …