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Questions tagged [firefox-extensions]

Questions related to extensions or plugins that enable, disable or extend the functionality of Mozilla Firefox

From an official FAQ:
What is an add-on?
Add-ons are small pieces of software that add new features or functionality to your installation of Firefox. Add-ons can augment Firefox with new features, foreign language dictionaries, or change its visual appearance. Through add-ons, you can customize Firefox to meet your needs and tastes.

Firefox Add-ons Home

Note: Add-ons and extensions are synonyms, but they are different from plugins or search plugins. However, tag currently serves for all types of these tools.

864 questions
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All of my Firefox add-ons have been disabled suddenly, how can I re-enable them?

All of my Firefox extensions were spontaneously and simultaneously disabled (converted to Legacy status) a few moments ago. How can I re-enable them? Firefox 66.0.3 (64-bit)
jonsca
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92
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6 answers

How to hide tab bar (tabstrip) in Firefox 57+ Quantum

How to hide/disable/remove the tab bar in Firefox 57+ ("Quantum")? The goal is to just hide the tab bar totally. Useful if paired with extensions like "Tree Style Tab". Note: there is a similarly looking question here: Firefox hide everything except…
VasyaNovikov
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74
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3 answers

Is there a Chrome equivalent for Firefox's multi-account container extension?

I just found out about Firefox's multi-account container extension. For those unfamiliar, this is a good overview...https://youtu.be/Gy7lyvAfOSw. It seems like a fantastic solution for being able to be logged into the same account, e.g. your…
A. Ro
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61
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8 answers

Change key bindings (keyboard shortcuts) in Firefox 57

Since the Firefox 57 (Quantum) update all AddOns which allowed to change key bindings in Firefox seemed to have stopped working/being supported. Is there a method to change the default key bindings in Firefox Quantum?
Finn
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58
votes
4 answers

How do I prevent pages I visit from overriding selected Firefox shortcut keys?

In Firefox, how can I prevent pages from overriding Firefox built-in keyboard shortcuts through Javascript on a per-key basis? Preferably on a per-site basis, too? The most frustrating override is the forward slash ('/') that's linked to "Find in…
Secure Shel
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58
votes
5 answers

Firefox shortcut to open a particular account container

Firefox has multi-account containers that allow you to use the same website with several accounts, without having to use a different browser: Problem: I always open tabs with CTRL-t because clicking takes too much time. Question: How to open a new…
Nicolas Raoul
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56
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4 answers

What's the difference between Vimperator and Pentadactyl?

I've been using vimperator for a few months and loving it (although it makes it hard for me to go back to primitive mousery on others' computers). I've seen that there's a fork called Pentadactyl, but I can't tell what the difference is. Is there…
John McDonnell
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48
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5 answers

What is the "Google Update" Firefox add-on?

Browsing through Firefox's Add-ons list, I've discovered that there is one named Google Update, which I don't remember installing. How did it get on Firefox's list of installed Add-ons, or plugins, and what is it doing there?
Tom
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40
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2 answers

How to examine source code of Firefox extension before installing it?

Is there a convenient way to examine the source code for a Firefox extension before installing it? (There is a Chrome extension that offers this functionality, though I have not used it, and cannot say how well it works. At any rate, I am…
kjo
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39
votes
7 answers

How to get the Markdown Viewer addon of Firefox to work on Linux?

I've installed the Markdown Viewer Firefox addon, but I cannot get it to work on my Ubuntu installation. Firefox is my browser of choice and I am trying to move to Markdown in Vim as my basic text-writing software. Is there a way I can get this to…
Kazark
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36
votes
4 answers

Is there a way to indicate which Firefox tab is making sounds?

I am essentially asking for a Firefox equivalent to the Chrome extension called MuteTab - a way to identify which tabs are making sounds and then mute them accordingly. Is there a such extension for Firefox? Any other ideas? This would be especially…
Samir
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33
votes
7 answers

Disable/enable the proxy on a tab by tab basis in Firefox

Is it possible to disable/enable the proxy connection on a tab-by-tab basis in Firefox? I can access the internet with the proxy enabled, and I can access our internal servers with the proxy disabled, but neither configuration allows the other. I…
Rich
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33
votes
7 answers

Change Firefox new tab background

I always use dark personas theme or the default compact dark theme that comes included with Firefox and I don't like the default background color being white when I open a new tab. There was an add on I used that let me customize new tabs but it's…
danicotra
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31
votes
1 answer

Firefox Quantum (ver >= 57) - How Can I Hide the Horizontal Tab Bar with TreeStyle Tabs?

Tree Style Tabs is an excellent plugin and probably the main reason I use Firefox. With the newer versions of Firefox, Tree Style Tabs works nicely, but I can still see the same tabs duplicated across the top horizontally. How can I hide the…
semtex41
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26
votes
10 answers

How to save a bookmark in Firefox with POST data?

I would like to save as a Firefox bookmark a page which is not accessible using GET. The only way to retrieve the page is to send some POST data. For example, I would like to bookmark a Chronopost parcel tracking page, which only allows POST for…
Etienne Dechamps
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