Firefox Support Forum

I view a lot of pdf documents via firefox, the light gray background makes my eyes and head hurt after prolonged usage. In the past I found a solution on this forum that advised to set pdfjs.viewerCssTheme to "2" in about:config. 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 for pdfjs.viewerCssTheme but there appears to be no change. I tried restarting the browser, setting the theme to 0 and to 2 again, updating browser. Sadly the theme is still light gray. Is there a way to change it again? The desired outcome is in pic 2. I do NOT want to change the color of the pdf pages themselves.

I've always liked the Firefox New Tab page, with Pocket, and until today, DarkReader plugin has always worked. But now it says that it can't because the page is protected.

I tried the solution to use bookmarklets, suggested in https://support.mozilla.org/en-US/questions/1350781, but it didn't have any effect (https://sanketmehta7.github.io/DarkMode-JS-BookMark/

If I can't find a solution, I'll just ditch Pocket, and use Google as my first page, or something. Or maybe ditch Firefox, which doesn't seem to think that dark mode is important. I don't like being blinded by the light.

I have a home-built media center (OS: Linux Mint 20.3) utilizing Firefox as the primary browser. This system has run almost flawlessly for many years. Updated to 20.3 in early 2022. Rather suddenly (yesterday) Firefox began repeatedly crashing, displaying 'Mozilla Crash Reports' (example attached). Firefox appears to initiate as expected. However, on display (e.g., Youtube, Facebook, web page, etc.) request, Firefox immediately throws a 'Mozilla Crash Report'. I do not recall any changes to the system that might have generated this condition, and have spend most of today unsuccessfully troubleshooting.

MB: Gigabyte F2A85XM-D3H CPU: AMD A-10 5800K APU with Radeon HD Graphics OS: Kernel: 5.4.0.170 generic x86_64bits; on 128MB SSD Firefox for Linux Mint mint-001 - 1.0 (122.0 (64 bit)) RAM: 7 GB

I have attempted to follow some of the moz://a Support pages (i.e., "Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems"). I have noted that while in 'Troubleshooting mode', Firefox appears to behave as expected, seeming to implicate extensions, themes and/or hardware acceleration. However, under normal Firefox operation enabling/disabling these does not seem to resolve the issue.

    * Hardware acceleration (on or off) still results in display of 'Mozilla Crash Report',
    * Default theme is selected, and
    * I don't appear to have any unaccounted extensions or other addons enabled.

Any thoughts and/or additional guidance would be greatly appreciated.

Is it still possible to configure userChrome.css to have the URL field in the Firefox 'Add bookmark' window? Also, is userChrome.css configuration going to be used no more in future releases? If yes, then how will we be able to customize, for example, fonts in Library, side bar and context menu?

I see where other people have posed this question but the procedure offered is not available to me.

I am using Firefox (Flatpak) version 121.0 on an Ubuntu 22.04 laptop.

On installing a new extension I should either see the extension's icon on my toolbar or else have a clear means of adding it. I have neither.

Clicking on the jigsaw icon in the toolbar, I get migrated to the about:addons page. On clicking the Extensions tab, I get the screen listing all installed extensions. Each extension has a ... icon beside it. But when I click on this, there is no "Pin To Toolbar" option.

What is wrong here ?

Firefox crashed, Reinstalled it v121.0.1 Win Pro 10 (x64)

Although Extenions are reinstalled, I cannot find any way to get them into a toolbar now, (Using the Drag - Drop - Shift method)

There is supposed to be a "Gear alongside each extension" so that can be chosen, but no gear which works now.

Very frustrating as cannot properly access these extensions now.

Some time ago, I found the way to inser these Extensions (Addons) into the Toolbar, but cannot remember how I did it.

The Extensions show they are installed and "working" but it's rather useless nmot being able to get the shortcuts for each onto the Navigation Toolbar.

Appreciate help - Thank you.

I am using Firefox on a new PC. Whenever I type something into the address bar, all results appear under a small Firefox Suggest header, even though Firefox Suggest is not available to me in the United Kingdom. I believe it is possible to remove this header through about:config, and I did so on my old PC shortly after FIrefox Suggest was released in 2021, although I have long forgotten how to do this for obvious reasons. Could somebody please explain how this header can once again be removed, or is it a permanent feature? Thank you in advance.

Hey, since the new update (121.0.1) the new tab button isnt on right from the most right tab. With customization the button can only be put on the far left. Is there anything i can do?

hello :)

in chrome when you drag a tab out to open it in another window it automatically goes to a smaller window, firefox always copys what size the window was when you dragged it out. so when the window is maximised it will always open a new maximised window.

So my question is, when dragging a tab to open it in a new window is there a way to stop it from copying the size of the window you dragged it?

im really bad at explaining things so here are visual of what i mean - https://imgur.com/a/aSj0P2G

One website in particular is almost 100% black. I cannot see most text. On another site, I cannot see check boxes, can't see the trash can icon.

This just happened recently. When I switch to Light Mode in the settings, both sites remain dark.

What settings can I change so everything on a site is visible?

I tried eveything but found no way to access the store page of a specific extension, am i missing something?

Searching isnt good if it has a simple name as thounsands show up

In the about:profiles page I can see that the Root Directory for my current profile is: /home/username/.mozilla/firefox/no9r1iq5.default-release-1681391696978 When I click the Open Directory button it does nothing. When I manually navigate to /home/username/.mozilla/firefox I can see that there is no folder there called no9r1iq5.default-release-1681391696978

The Local Directory is show as: /home/username/.var/app/org.mozilla.firefox/cache/mozilla/firefox/no9r1iq5.default-release-1681391696978 This exits and opens with the Open Directory button.

If I search for no9r1iq5.default-release-1681391696978 in the file manager, I see that there are two folders with this name, on at the Local Directory path shown above and the other at: /home/username/.var/app/org.mozilla.firefox/.mozilla/firefox My assumption is that this is actually the Local Folder (it contains files with today's date)

My question is, why does about:profiles show the wrong path for the Local Directory or why is the actual Local Directory in the wrong place (it appears that the path shown in about:profiles is the normal default location)?

I tried creating a new profile and it was created in exactly the same way: the Local directory path is: /home/username/.var/app/org.mozilla.firefox/.mozilla/firefox but about:profiles says it is: /home/username/.mozilla/firefox

I would rather have my profile in the normal default location but I want to ensure that I don't leave pointers to the wrong location that could cause problems.

I am running Firefox 121.0 (64-bit) from flathub on Debian GNU/Linux 12 (bookworm).

Any help appreciated.

I managed to change colors of almost everything in my firefox browser but despite selecting dark mode and trying all different options in firefox color, all the menus just refuse to not be white. So my question is how can I change color of all the menus (file, history etc.) to be anything other than white?

I went to a normal retail website, and got this page that appeared to be from Firefox, telling me to download an add-on for security. I declined. but now when I try to go to that website, I get re-directed to some strange websites. How do I fix this?