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.

Why can't you pin the extension 'Tiny URL' to the toolbar any more?

This extension is really useful! I don't want to have to excavate Firefox to use it.

Tiny URL is more useful than the rather silly 'Pocket' which just seems to be a page full of adverts

The Amazon.co.uk search plugin was working but now its not and when i try to click "add search engine" a box pops up with

Firefox could not download the search plugin from: https://d2lo25i6d3q8zm.cloudfront.net/browser-plugins/AmazonSearchSuggestionsOSD.Firefox.xml

another post suggested checking the about:config browser.search.region mine says "GB" which would be correct for .co.uk

All other search plugins work fine. Any suggestions?

Hi there - I accepted Firefox's prompt to "refresh" the browser and had no idea it would take away my add-ons. How do I get these back? I don't even remember what they all were, but I know they made a huge difference and now I can't believe all the ads I'm seeing and then my "facebook container" (and other kinds of container tabs) is gone too! How do I fix this? Can I undo the "refresh"??

I turned off the translator popup via about:config and browser.translations.automaticallyPopup to false. Now translation is gone. How can I keep the option to quickly translate a page in the address bar without having the popup jump in my face each time I open a new tab, forcing me to click it to make it go away? This would be a nice option but an extremely distracting presentation. thanks.

Hi all Firefoxers,

There are a few sites that I always access via a URL that could look like :

https://device.domain.com/admin/

When I went to visit that device, typing in the URL bar "device.domain..." , Firefox's 1st default suggestion shows as https://device.domain.com/

The problem is that I never visited that site, the way to access this device is https://device.domain.com/admin/ - there's no way to reconfigure the device and have an auto-redirect to .../admin location.

https://device.domain.com/ is not in my Browsing History nor do I have an open-tab. In the settings Privacy->Address Bar, disabling "Browsing History" removes https://device.domain.com/ from the suggestion list but it also removes all suggestion from the history. This is the expected behavior, the bug required fix isn't related to this.

If the "Base URL" isn't saved in the Browsing History, how can someone tell Firefox to only suggest absolute entries from the history?

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.

As the title says when I am using the video player on Coursera website I am not able to hide the control bar while on fullscreen mode (even if I don t move my mouse for more than 15 seconds). I ve attached a screenshot with the control bar being displayed. (also the captions are overlapping with that control bar) I ve also tried different ways of opening the fullscreen mode (click on the "Full Screen" button or by pressing 'F'). I don t have this problem on websites like YouTube.

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?

Current version of Firefox on Windows 11. Menu bar hidden when Firefox started. I have tried every setting suggested and understand how to turn it on, but next time I start Firefox, menu bar is hidden again. Reinstalling Firefox -- no joy. Restarting in safe mode -- no joy. Help!

With color perception limited vision, I cannot distinguish default colors for visited/not-visited link colors. I tried changing colors in Settings via:

Colors / Override FF's default colors for text, website backgrounds, and links:

I changed the colors to what suits my needs BUT just changing those colors ALSO put focus(?) lines around various texts and randomly changes colors elsewhere in arbitrary fashion making my changes unacceptable. What am I doing wrong?

I am not stupid, but I do not understand the langauge used in describing "modifications." It would be useful for people in similar states of lack of knowledge to have at least maps/legends of web pages explaining the arcane language of webs.

TIA Stephen

I love this addon, but sometimes it doesn't respond. it hasn't been updated since 2017 and the support page is inaccessible.

Back To Top for Firefox (WE)

Is there a something similar available?

Hi

I have been using Firefox for years and never encountered this problem. I changed the theme to dark but it made some websites unreadable, so I changed it back. The problem is some websites did not register the change. I cannot use these websites anymore with your browser, and I would prefer to stay with Firefox. What can I do? I have changed the system settings and Firefox settings. Nothing has helped. I have gone through your troubleshooting advice and googled various topics to figure this out. Nothing. It is frustrating, especially when one of the broken sites is my work portal. This cannot continue, so I will be forced to change browsers. I use both Mac and Windows computers if that helps. It is the same on both.

Cheers, George

why doesn't my theme stay engaged?I have 4 computers and I am constantly having to engage my fav theme on them all all the time.

Theme: Animated Dark fox theme with spinning globe and glow effect.

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 ?