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Firefox 101.0 is telling me I need a video codec but it does not say which one. How do I find out?

Firefox says I need a video codec to play a video (that is aparently somewhere on the page). It does NOT tell me what video, what video format, or what codec I need. H… (read more)

Firefox says I need a video codec to play a video (that is aparently somewhere on the page). It does NOT tell me what video, what video format, or what codec I need. How do I find out what codec I need?

Firefox version: 101.0 (64 bit) OS: Fedora 36

Asked by dkramber 5 months ago

Answered by cor-el 5 months ago

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Is it possible to force pages in "support.mozilla.org" dark?

Hi, I'm a very happy long time Firefox user. I use the extension "Dark Background and Light Text" so that my webpages are much more easy on my eyes. The extension works e… (read more)

Hi, I'm a very happy long time Firefox user. I use the extension "Dark Background and Light Text" so that my webpages are much more easy on my eyes. The extension works everywhere but in "support.mozilla.org".

How is it possible to have dark theme in Mozilla's support pages too?

Thank you very much. Prayan

Asked by prayan72 1 month ago

Answered by jscher2000 - Support Volunteer 1 month ago

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Remove favicons?

Is it possible to remove favicons from the Bookmark Tool bar and bookmark pulldown menus? It'd be a much cleaner look. Not entirely sure, but it looks like someone was as… (read more)

Is it possible to remove favicons from the Bookmark Tool bar and bookmark pulldown menus? It'd be a much cleaner look. Not entirely sure, but it looks like someone was asking a similar question here: https://support.mozilla.org/en-US/questions/1258765 If by any chance pasting his contact here reaches @jscher2000 perhaps he has some input. https://support.mozilla.org/en-US/user/jscher2000 Thanks!

Asked by Phin 3 years ago

Answered by cor-el 3 years ago

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How can I do keyboard shortcut, "Text encoding options", then "Unicode". I have it on toolbars

How can I do keyboard shortcut, "Text encoding options", then "Unicode". I have it on toolbars. Like on screnshot, I pint mouse, then I need to select Unicode, which is b… (read more)

How can I do keyboard shortcut, "Text encoding options", then "Unicode". I have it on toolbars. Like on screnshot, I pint mouse, then I need to select Unicode, which is bothering. I am opening many many pages, which are always different than unicode.

Asked by newbusinessvisions 2 years ago

Answered by cor-el 2 years ago

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How can I prevent ctrl+q from closing the browser?

When I click ctrl+q by mistake, the browser window with all its tabs is closed immediately, with no warning. This has already made me lose data. is there a way to disable… (read more)

When I click ctrl+q by mistake, the browser window with all its tabs is closed immediately, with no warning. This has already made me lose data. is there a way to disable this keyboard shortcut?

Asked by Erel Segal-Halevi 2 years ago

Answered by Ruba 2 years ago

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watch video "in" firefox browser

I'm trying to watch videos in Firefox. Youtube works but Xvideos does not. Firefox pops up a window asking me: >> "Opening xvideos"."com ###.mp4". >> whi… (read more)

I'm trying to watch videos in Firefox. Youtube works but Xvideos does not. Firefox pops up a window asking me:

>> "Opening xvideos"."com ###.mp4". >> which is: MP4 Video (16.4MB) >> from https://cdn77-vid.xvideos-cdn"."com >> >> What should Firefox do with this file?

My only choice is: Open with Windows Media Player x86 (default)

suggestions?

I'm running Windows 7 Firefox 76.0.1

Thanks!!!!

Asked by G_Eak 2 years ago

Answered by cor-el 2 years ago

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'recommended by pocket' option not visible in about:preferences#home, not in new tabs

I am unable to get the 'recommended by Pocket' panel to appear in new tabs with my normal user Firefox profile (Firefox account sign-in) on Mac Catalina. When I go to ab… (read more)

I am unable to get the 'recommended by Pocket' panel to appear in new tabs with my normal user Firefox profile (Firefox account sign-in) on Mac Catalina. When I go to about:preferences#home the option simply is not present.

I created a new user login on my mac to access banking and other financials. This uses a separate Firefox profile (including new Firefox account sign-in and email), and the 'recomended by Pocket' panel is present.

The panel is present on new tabs opened for my normal Firefox account sign-in on my iOS (iPhone) Firefox install.

The about:config settings searching for 'pocket' appear to be the defaults, and match the settings in the financials account.

I have tried in 'safe mode' (add-ons disabled) and have done a Firefox 'refresh', however my add-ons (and presumably everything else) were restored when I signed back into my normal Firefox user account.

Hovering over the Pocket icon in the address bar displays 'save to Pocket', implying to me that it has signed me into Pocket. I've signed in at getpocket.com. New Firefox profiles without signing in do not show 'recommended by Pocket' in either new tabs or the about:preferences#home configuration page, but I expect the functionality requires being signed in to a Firefox account.

Help or suggestions much appreciated.

Asked by rob92 2 years ago

Answered by Shashank Shekhar 2 years ago

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Disable bloated address bar?

Hi, Since 1-2 months my Firefox address bar grows vertically to about 1.5 its normal size when I click it. I think this came with an update. How can I disable this? It's … (read more)

Hi,

Since 1-2 months my Firefox address bar grows vertically to about 1.5 its normal size when I click it. I think this came with an update. How can I disable this? It's really annoying and unnecessary.

Thanks

Asked by MM6631764 2 years ago

Answered by jscher2000 - Support Volunteer 2 years ago

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language options

I added the language/spell check to my work email (outlook.office). I follow the same procedure in my hotmail (outlook.live) and although I added them, it is not an optio… (read more)

I added the language/spell check to my work email (outlook.office). I follow the same procedure in my hotmail (outlook.live) and although I added them, it is not an option when I type a message. I use Firefox as a browser and cleaned the cache. Elizabeth

Asked by egulacsy 2 years ago

Answered by jscher2000 - Support Volunteer 2 years ago

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Remove Tabs on Top

Hi all, I am trying to customize my Firefox on Mac because the tabs on top interfere with the menu bar, thus I only want tree-style tab extension to work on the side, wit… (read more)

Hi all,

I am trying to customize my Firefox on Mac because the tabs on top interfere with the menu bar, thus I only want tree-style tab extension to work on the side, with the tabs on top disabled.

I followed this thread: https://support.mozilla.org/en-US/questions/1184674#answer-1028260 as well as this clear guide on how to create userChrome.css: https://www.userchrome.org/how-create-userchrome-css.html When I tried to restart the browser, I seemed to have been logged out of my profile, with all customization gone and a standard white (instead of black) menu. I deleted the chrome folder and it is normal again now.

I suspect the userChrome.css file should contain more than just the one line I tried to add: #tabbrowser-tabs { visibility: collapse !important; } ; Is there any location where I can copy my current intra-browser customization into the userChrome.css file?

Asked by Castor 2 years ago

Answered by jscher2000 - Support Volunteer 2 years ago

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Firefox default action for PDF has spontaneousl changed

I have always had PDFs set to "Always ask" is described here: https://support.mozilla.org/en-US/kb/change-firefox-behavior-when-open-file This hasn't changed. The dialog… (read more)

I have always had PDFs set to "Always ask" is described here: https://support.mozilla.org/en-US/kb/change-firefox-behavior-when-open-file This hasn't changed. The dialog which asks what to do with the file used to have "Save File" selected by default. This was convenient, because this is usually what I want. However, the default selection has recently changed to "Open with Firefox", which I hardly ever want. This requires me to perform an extra step when accessing PDFs from the Web, which I do quite often. I am not aware of having done anything which would affect this, nor have I found a corresponding option to change it back. How can I restore the previous behaviour?

Asked by rsbrux 2 years ago

Answered by Wesley Branton 2 years ago

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Turn off the control media playback via harware media keys

Can I turn off the "control media playback via hardware media keys on a keyboard or headset or virtual media control interface" function? (Firefox 81.0, Windows 10) … (read more)

Can I turn off the "control media playback via hardware media keys on a keyboard or headset or virtual media control interface" function? (Firefox 81.0, Windows 10)

Asked by Hey Google 2 years ago

Answered by TyDraniu 2 years ago

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[Mysolved] How to disable all shortcuts in FF?

As there is no way to customize FF shortcuts, How to Disable them all together? In any way: editing settings, browser internal files, whatever. No, it's not about addon s… (read more)

As there is no way to customize FF shortcuts, How to Disable them all together? In any way: editing settings, browser internal files, whatever. No, it's not about addon shortcuts. Yes, i already checked smt like a hundred topics/adviced addons web-search could provide, and none works.

Asked by rey0n 2 years ago

Answered by rey0n 2 years ago

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Any way to change the color of individual Bookmark folders?

I use the Bookmarks Bar extensively. But all the folders are the same color. I would find it much easier to find things quickly if I could change individual folder colors… (read more)

I use the Bookmarks Bar extensively. But all the folders are the same color. I would find it much easier to find things quickly if I could change individual folder colors.

Any way to do this?

I'm already using Jscher's excellent UserChrome script to make the folders an attractive yellow, instead of gray. But can this be done for individual foders?

Asked by MartyJames 2 years ago

Answered by cor-el 2 years ago

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Touchpad gestures doesn't work in Firefox. Please add this very useful feature.

Windows 10 gesture two finger swipe left and two finger swipe right doesn't work in Firefox. Two finger swipe left allows user to go history backward and two finger swipe… (read more)

Windows 10 gesture two finger swipe left and two finger swipe right doesn't work in Firefox. Two finger swipe left allows user to go history backward and two finger swipe right allows user to go history forward. These gestures work in Firefox if the user hold Alt key and preform the gestures. But most of the users don't like to hold Alt key and preform the gestures. Please fix that issue.

Asked by Rifat Mahmud 2 years ago

Answered by FredMcD 2 years ago

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MAIL ICON

The icon for MAIL is no longer available at the right end of the search bar - should be to left of the history/bookmarks/pocket list icon. Please help me restore this. … (read more)

The icon for MAIL is no longer available at the right end of the search bar - should be to left of the history/bookmarks/pocket list icon. Please help me restore this. I use it to place news headlines etc. into e-mail for sending!!!!

Asked by maggiem14 2 years ago

Answered by cor-el 2 years ago

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  • Archived

Change pdf viewer background color (both sides of the pdf) to dark

Hey there, awesomes! I'd like to change my Firefox pdf viewer's background color (both sides of the pdf) to dark, currently it shows light gray (see `background_bg.png`)… (read more)

Hey there, awesomes! I'd like to change my Firefox pdf viewer's background color (both sides of the pdf) to dark, currently it shows light gray (see `background_bg.png`). And here is effect I want it to look like (see screenshot from Chrome `wished_bg.png`). Thanks in advance (:

PS: I don't want to change my theme to dark. It seems I have to change my css, but I dunno which & how.

Asked by Mark Taylor 2 years ago

Answered by jscher2000 - Support Volunteer 2 years ago

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Hide the title bar.

I'd like to hide the title bar in Firefox. It takes up valuable on-screen real-estate, and doesn't really serve a purpose (other than showing a web page's full title, whi… (read more)

I'd like to hide the title bar in Firefox. It takes up valuable on-screen real-estate, and doesn't really serve a purpose (other than showing a web page's full title, which I'm not interested in anyway).

In this screenshot, I have Firefox on the left, and Brave on the right. Now, I know it's only about 30 or so vertical pixels, but the title bar in Firefox is taking up a lot of space that could be used for actual web content.

Is there any way to disable this top bar? Or is it baked into the actual program itself?

Asked by tailsnow 2 years ago

Answered by cor-el 2 years ago

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FF 83 Two-Finger Scroll Sensitivity

Hi, I just updated to Firefox Developer 83.0b4 and the two-finger scroll sensitivity has been drastically reduced with no clear way to reconfigure it. I've spent the past… (read more)

Hi, I just updated to Firefox Developer 83.0b4 and the two-finger scroll sensitivity has been drastically reduced with no clear way to reconfigure it. I've spent the past 30 mins tweaking scroll settings in `about:config` (restarting FF after each value change) to no avail. In fact, it doesn't even appear that enabling/disabling `general.smoothScroll` or `general.smoothScroll.mouseWheel` have any noticeable effect, let alone the many other options listed. Are there any pages that describe the myriad options in `about:config` so that I can take a more measured approach to troubleshooting this issue?

What changed? And why? Chrome did this same thing at v68 without ever providing any way to configure it and FF has been my main browser since. I'm just trying to understand how such a significant input change can happen overnight without any explanation or any way to fix it.

Asked by Ian 2 years ago

Answered by Ian 1 year ago