Questions tagged [firefox-extensions]

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

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Where can I find contacts to get support on addons.mozilla.org (AMO)? [closed]

I develop Linguist - a browser extension to translate web pages, and recently, in version 4.0 I have implemented a new feature, "custom translators", to allow users to define their own ...
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16 views

How do I set the default Firefox zoom level for *local* files?

Every time I open a new local file, the zoom level is reset to 100%. Is there a way/extension to make the default a different zoom percent? It'd be even better (but not required) if I could set this ...
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0 votes
1 answer
33 views

Disable Firefox's tab unloading feature

Starting in v93, Firefox introduced a tab unload feature. In a previous question I asked whether it's possible to disable this feature for specific tabs. (That does not seem possible.) After using it ...
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  • 282
1 vote
1 answer
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How can I force nitter.net in light theme mode in Firefox?

By default nitter.net appears in a dark theme. Appending ?theme=Twitter to a URL makes every page appear in the light theme. Example: https://nitter.net/elonmusk https://nitter.net/elonmusk?theme=...
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  • 94
3 votes
0 answers
88 views

Prevent Firefox from unloading specific tabs

Starting in v93, Firefox introduced a tab unload feature. I generally like it, but it always unloads those tabs that are most important to me. Is there some way - either setting or addon - to "...
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  • 282
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0 answers
29 views

Allow firefox extension to run in private windows via policy engine

I'd like to allow certain extensions to run in private windows via firefox's policy engine. I found out that one can set this in extension-preferences.json: { "uBlock0@raymondhill.net": { ...
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0 votes
1 answer
19 views

How to change colors on webpage (non-owner) so chart elements can be distinguished ? (Firefox)

Is there a way to change the colors on one of the elements in ESPN's game flow chart, so it's easier to tell the two teams scores apart? (Why the colors are so close is mystifying.) Maybe there's a ...
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1 vote
1 answer
22 views

How to force-on an addon in Firefox?

Firefox recently banned RT news addon: https://addons.mozilla.org/en-US/firefox/blocked-addon/%7Ba53eff1b-c95c-4297-8ac1-66d60268f391%7D/1.7/ I used this addon to get access to news faster. How can I ...
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  • 416
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0 answers
19 views

Firefox Containers and the same bookmark in different folders to open in different containers

I hope I'm not missing something obvious here. I'm using Firefox 93 and the Multi-Account Containers add-on. I have several different accounts on the same social media platform, and I have containers ...
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1 vote
1 answer
216 views

Why do downloads that fail with error "NETWORK_FAILED" in firefox have the property "canResume" set to false? How can they be restarted in code?

I'm trying to fix the defunct Firefox plugin "auto resume downloads". It appears that to restart a download, one can invoke (from a plugin or Firefox's plugin inspector console) downloads....
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  • 200
0 votes
1 answer
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How can I use the capability of a VPN extension of Firefox or Chrome for my activities out of these browsers?

I am currently using a very good VPN in Chrome (also in Firefox). Is there any way that when I turn on the VPN, I can also use its ability in other browsers or for every internet connections on the ...
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  • 53
0 votes
1 answer
31 views

YouTube Responds Too Slowly on Firefox Sometimes

Sometimes YouTube takes too long to display results for a search query or change to a video page. I noticed the following warnings in the developer console. The first one shows up after a few seconds ...
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Display total visits, grouped by site, in Firefox

Is there a way to list the total number of visits, grouped by website, within Firefox? Perhaps there is an extension that will do this. Something like: domain visits duckduckgo.com 1000 ...
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  • 879
0 votes
1 answer
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Where does FireFox store extension's data on macOS?

I've seen a couple related questions, but they're either Windows-specific, or out-of-date — my FireFox profiles/BLAH.a2rad folder doesn't include a browser-extension-data subfolder. A couple specific ...
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  • 1,925
2 votes
2 answers
3k views

What is this Firefox hidden add-on: "Add-ons Search Detection (addons-search-detection@mozilla.org)"?

In Firefox 95.0.1 task manager, I see the following item: "Add-ons Search Detection (addons-search-detection@mozilla.org)" with full permissions to all browsing and private tabs. What is ...
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0 answers
29 views

Is there a way to modify how webRTC works so to not leak my IP? (tfor example through plugins in the browser?)

question is in the headline - I just want to webRTC not leaking my IP, but I still have to use it. Is there any way through plugins - I have installed and tested a few, but I can't wrap my mind around ...
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44 views

How do I prove that cookies saved for each container are actually separated from each other when using Firefox Multi-Account containers?

The whole idea of Multi-Account containers is to keep trackers from checking up on your browsing... the idea is to separate that shopping site from your tax and homecare browsing for example. Is there ...
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  • 36
0 votes
1 answer
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Can a website "secretely "identify me by other ways than just IP? [closed]

How can website that limits downloads per IP "ignore" that IP is changed by VPN? I really am not keen to overcome a such limitation, but I'm just curious how (or if) the website may act as ...
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  • 682
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0 answers
84 views

How to edit a config in about:config via command line WITHOUT having to restart Firefox to have it applied?

I'm trying to automate a process and want to edit a config in about:config via command line WITHOUT having to restart Firefox to have it applied. How can I do that? I'm under Linux. I tried editing ...
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  • 211
0 votes
0 answers
18 views

Some google services fail in Firefox, but work in private mode

For the past few weeks I've noticed that some google services (in particular keep.google.com) fail to load properly in Firefox (kubuntu 21.10). Of course it could be due to some add-on, in particular ...
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  • 150
0 votes
1 answer
84 views

How to prevent Firefox tab title from being used as window title in Windows?

I want the Firefox Window title to stay the same irrespective of the selected tab title. For example window name can be "Mozilla Firefox". It can be anything else too but it should not ...
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  • 109
0 votes
0 answers
14 views

File Integrity Check Permissions

does file integrity check require write permissions Am just curious as some download managers extensions has removed the ability to check files sums, which kinda super unpractical move from browsers ...
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0 answers
25 views

Firefox, open link in new tab with history

In Firefox, I heavily use »Open Link in New Tab« (or rather Middle-Click or Ctrl+Left-Click). The tabs opened that way start out with an empty history, but I'd like them to retain the history of the ...
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  • 479
1 vote
2 answers
207 views

Enable all Firefox extensions in private mode by default

I am trying to enable all extensions in private mode in Firefox without having to go into each addon. Is there a universal switch (or extension) of sorts that does this in one go? I tried this but it ...
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  • 23
0 votes
0 answers
40 views

How to automatically unify and download the segmented videos of a website?

When I play the videos in a website, video downloading plugins in Firefox show that the playing video is broken into segments. Is there anyway to automatically unify the video segments and download ...
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  • 135
2 votes
1 answer
96 views

Where should extensions be placed to be included in a custom build of firefox?

I am trying to create a custom installer for firefox which will include an extension that I created myself, however, I am unable to find the correct place to put the zipped extension file in the ...
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0 votes
0 answers
65 views

The privacy-focused Decentraleyes extension for Chrome and Firefox is supposed to emulate CDNs, but what are they really?

After reading the wiki for the privacy-focused Decentraleyes extension available for both the Chrome and Firefox browsers, I am still confused on what the extension does. According to said wiki, ...
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1 vote
1 answer
879 views

How to have seperators between tabs in new Firefox?

The new Firefox update (June 2021) is nice and minimalistic - however, I really dislike how difficult it is to make out where one tab starts and ends as there is no divider between the tabs: I can't ...
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  • 111
0 votes
0 answers
19 views

Firefox: how to make an extension restart from time to time (automatically)?

I use a Firefox extension which shows me the list of unread emails and allows to manage these quickly (mark as read, delete, etc). This is a proprietary extension, and it is abandoned. The problem is ...
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1 vote
1 answer
22 views

Company Websites Share Credentials - How do I sync credentials between websites in Firefox?

I think it's pretty common for companies to operate several internal websites, which use the same (LDAP?) credentials. I believe it's also fairly common for that password to need to be changed every 2-...
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1 vote
1 answer
73 views

Firefox: How to Create Shortcut or Button to "Manage Data" (cookies/storage manager)

I would like to have a button to take me here: Tools -> Options -> Privacy & Security -> (scroll down) -> Manage Data. (Load the cookie manager.) I do this continuously, and all the ...
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  • 17
1 vote
1 answer
30 views

Display warning on specific domain with firefox

Using Firefox 87, I would like have some kind of warning when I am on a specific website or domain. Like a parental control, except that instead of blocking the content, it just gives me a visual ...
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  • 115
2 votes
1 answer
206 views

Firefox disable extension on local files

Is it possible to disable selected firefox extensions from acting upon local files starting with file:// as this might be security issue? Any suggestions? Google Chrome has this feature, unfortunately ...
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  • 341
1 vote
1 answer
202 views

How I export my profile data from a firefox extension?

How I export my profile data from an extension? An extension I'm using isn't working properly and I'd like to export my data before reinstalling it. It's called onetab. The menu on the top right ...
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  • 629
-1 votes
1 answer
14 views

Hiding navigation bar outside full-screen mode

I would like to have a non-fullscreen window of Mozilla Firefolx with a hidden navigation- and tool-bar. Is there a way to do this? Or alternatively, are there browsers that can do this?
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1 vote
1 answer
125 views

Firefox: How to "bookmark" page contents (for long articles to be able to easily navigate through where one has ended reading for example) [closed]

This is difficult to search for because the term "bookmark" is widely used as a bookmark for the whole page. The functionality that I'm looking for is, like, a "traditional bookmark&...
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1 vote
1 answer
373 views

Need to force unsigned firefox extensions to be installed (2021)

As of 3 days ago (March, 2021), with Firefox v78.8.0esr (64-bit), I cannot install unverified (unsigned) add-ons [extensions] anymore. And existing extensions that they have deemed as dangerous I ...
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  • 483
0 votes
0 answers
23 views

How to search inside installed add-ons in Firefox

On the about:addons page in Firefox there seems be no way of searching inside your own already installed add-ons. When I press ctrl+f it goes to the search box which obviously doesn't do that. Is ...
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  • 151
0 votes
1 answer
84 views

How can I confirm from the start that I want to open a website always in a particular multi-account container?

With Firefox' Multi-Account Containers one can set a particular website to open always in a given container, like so: Q: How can I avoid being asked to confirm this choice next time I open said ...
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  • 6,022
1 vote
0 answers
21 views

Firefox addons don't work at all

I've installed Autofill addon, it appears in the main taskbar now but when I click on it nothing happens: I don't see any new items in the context menu either. I've installed another similar addon ...
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1 vote
1 answer
275 views

How do I get around resistFingerprinting setting my preferred Firefox theme to light?

In Firefox, I want to have both browser.in-content.dark-mode and privacy.resistFingerprinting set to true. However, the latter setting, as discussed in this issue, masks this setting and sets the ...
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2 votes
1 answer
248 views

#No rights to write in Windows %temp% directory# blocks Firefox downloads, (un)installers, pdf prints, other temp tasks

This is a follow-up on Firefox cannot save files (most of the time), how to solve?, just with a more global problem than just Firefox: I cannot install or uninstall as soon as the %temp folder is ...
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0 votes
1 answer
145 views

How to have separate bookmark toolbars for personal/work purposes that can be hidden?

Is there an add-on for this? If not, what is the alternative for this purpose: to separate work and personal bookmarks? I already do something similar with the tab groups extension and I need this for ...
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1 vote
1 answer
116 views

limit an extension to a firefox container?

Is there a way to install a firefox extension within a single container? I'd like to try some of the shopping extensions (Honey, SlickDeals), but they as for "all data on all sites" and ...
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  • 1,277
0 votes
1 answer
96 views

Handling conflicting addon keyboard shortcuts in Firefox

I currently have both the To Google Translate and Firefox Multi-Account Containers add-ons installed in Firefox. The Ctrl + . keyboard shortcut for Multi-Account Containers doesn't work for me, but ...
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4 votes
3 answers
2k views

How to track Firefox's Internet Usage for each tab?

My Firefox is hogging up way too much of my bandwidth but I can't seem to figure out what is consuming all that data. I have only 2-3 active tabs, the rest 50 tabs from previous reboot are on sleep. I ...
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  • 41
0 votes
0 answers
263 views

Is there a way to open multiple ed2k links for amule/emule?

For example, if I copy just one ed2k link on firefox address bar ed2k://|file|firemule-0.4.1-fx.[contentdb.emule-project.net].zip|15754|7F35BB7A70E9BF16F81D10AFC6DF5079|h=...
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  • 67
0 votes
0 answers
41 views

OpenH264 isn't downloading for Firefox for WebRTC

Environment: Windows 10 IoT Enterprise 2019 LTSC - win64 Firefox ESR 78.3.1 The plugin OpenH264 isn't downloading properly, it is needed for Webex teams SDK to work. We have tried all the options ...
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0 votes
1 answer
34 views

How do I restore firefox addon that has been removed from toolabar?

I accidentally clicked on remove from toolbar option for one of my firefox add-on. The add-on is still installed, but not visible on the toolbar. I couldn't find any settings that would allow me to ...
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How to save or get binary file array of an image on the page without redownloading it in Firefox 81?

I'm using Firefox 81 (and also 82 dev edition), and I'd like to be able to save the images on the page that has finished loading without sending another GET request. This is because: I don't want to ...
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