Questions tagged [firefox-extensions]

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

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Programmatically close all tabs in Firefox Quantum

1. Summary I can't find, how I can close all tabs in Firefox Quantum without any manual mouse clicks. 2. Details (Details for preventing XY Problem) I am working on several projects. I need always ...
Саша Черных's user avatar
0 votes
0 answers
100 views

Restore the Firefox new tab page after being changed by an extension

A Firefox extension I have installed has taken control of the new tab page. I want to keep using the extension, but use the original new tab page (about:newtab). The extension offers a toggle to "use ...
Jan Pokorný's user avatar
1 vote
1 answer
85 views

How bad is remote code execution in browser plugins?

There was a Firefox addon installed on my PC which is now blocked for executing remote code. Does a Firefox plugin have enough privileges to make change to the system (Windows) and "install" another ...
Vntto's user avatar
  • 21
4 votes
4 answers
1k views

How can I determine the add-on that's causing this sketchy pop-up I'm seeing in Firefox on MacOS?

How can I determine the extension that's causing this sketchy pop-up I'm seeing in Firefox? I've determined: The pop-up appears reliably immediately after Firefox starts with this profile. It still ...
Kaypro II's user avatar
  • 1,492
0 votes
1 answer
889 views

How to reduce website bandwidth usage on Firefox PC using 4G/LTE

In Firefox 73+, how to reduce bandwidth usage? Some websites take up to 5Mb of bandwidth just to load the main page. I'm already using uMatrix and uBlock Origin addons.
Azevedo's user avatar
  • 528
0 votes
1 answer
87 views

Meaning of the notification Firefox seems slow to start?

Hi Firefox experts, When launching Firefox, it sometimes displays at the bottom a notification saying "Mozilla Firefox seems slow... to... start." Is this an official notification type within ...
johnsmiththelird's user avatar
6 votes
1 answer
1k views

Restrict firefox extensions or only activate them manually for certain tabs for more privacy protection

Some firefox extensions require quite intrusive permissions, which can be understandable depending on what the extension does, but would not be necessary to be granted all the time. Is there a simple ...
BlastingAgent's user avatar
0 votes
2 answers
694 views

Disable Drag and Drop tabs in FIREFOX

1) Is there a way to disable drag and drop of tabs in firefox and only enable it when I drag tabs while holding the control button? 2) A way to undo the last drag and drop using a keyboard shortcut? ...
Nick's user avatar
  • 91
1 vote
0 answers
128 views

Vertical toolbar in Firefox Quantum 68.4.1esr?

After the move to Web Extensions, the Vertical Toolbars add-on stopped working. Noone has bothered to make a WE version. Is this because it can't be done? I really miss Vertical Toolbars, All-in-...
Sunny Snaith's user avatar
1 vote
3 answers
39k views

Firefox - how to refresh an open tab automatically every x minutes?

can someone help please in the following situation: You have multiple tabs open in Firefox. While you are surfing across different tabs, you would like a specific tab (tab "A") to refresh itself ...
johnsmiththelird's user avatar
0 votes
1 answer
37 views

how to use ctrl + 1 to switch to previous tab in firefox?

I'm using firefox 71 in mac os, i'd like to use ctrl+1 to switch to previous tab rather than command+shift+tab, how to achieve this? i tried an add-on called custom key but not working, i also tried ...
user956609's user avatar
0 votes
1 answer
2k views

Add random number as query parameter to avoid caching with Chrome extension?

Is there a way to add the current timestamp as query parameters? I think it could be useful to avoid any cache issue. Originally Asked here - https://twitter.com/tcoppin_/status/1209131288965341190
Sachin Jain's user avatar
1 vote
2 answers
666 views

Reviewing Firefox Extensions - When was it installed?

I wish to review my Firefox Extensions, specifically I want to know the date when I installed all my extensions. Is this possible? I know about Review installed extensions | Firefox Help support ...
Darryn Brisdaz's user avatar
1 vote
1 answer
2k views

How to change domain of URL keeping params same using Requestly Chrome extension?

I need to change request domain, but keep params on the same, can Requestly extension do it? For Example www.domain1.com?a=1&b=2 --> www.domain2.com?a=1&b=2 PS - The question was asked ...
Sachin Jain's user avatar
4 votes
2 answers
4k views

How to change position/order of addon/extension in firefox?

how to I change position/order of addon/extension in Firefox? I'm using the latest version available.
Nioiu's user avatar
  • 41
3 votes
0 answers
530 views

user scripts like Greasemonkey are no longer editable in firefox 71 (they were working fine in the 6x version)

Just updated to Firefox 71 after not updating for more than an year. Now violentmonkey scripts can't be edited. Then also can't be switched on or off. They were working well in the 6x version of ...
music's user avatar
  • 252
0 votes
1 answer
65 views

Why is an extra, manual page load always required in Firefox for Greasemonkey/uBlock Origin to kick in?

I have some shortcuts to open Firefox, like this: "C:\Program Files\Mozilla Firefox\firefox.exe" -p "Twitch profile" --no-remote "https://www.twitch.tv/directory/game/somegame" When I run that ...
frustratedfox's user avatar
1 vote
1 answer
95 views

How do I prevent Firefox extensions from forcefully opening their webpages without my consent or permission?

Every now and then, I come back to my Firefox having opened the "I don't care about cookies" blog, with some "news" which I don't care about one bit (no pun intended). The whole point of the extension ...
angryfox's user avatar
1 vote
1 answer
129 views

In Firefox, how a website can be as default page of 'side view' addon when it's launched?

Side view addon is opened with a Welcome page by default in Firefox. Is it possible to change this behaviour, replacing default page with a website page?
mini's user avatar
  • 81
3 votes
1 answer
152 views

How to find out which Firefox extension prints to console

One of the Firefox extensions I installed prints 'undefined' to the console. It happens in a file cs.js. Is there any way to find out which extension does that, apart from disabling them one by one?
Igal's user avatar
  • 131
1 vote
1 answer
623 views

How to change the domain of URL without changing query parameters using Requestly?

My first use case would be to change the domain of a URL without changing the rest of the parameters using Requestly. Specifically change from https://web.whatsapp.com/send?phone=123&text=Hi ...
Sachin Jain's user avatar
4 votes
3 answers
13k views

How to download Firefox extension as .xpi-file manually from another browser?

How is it possible to download a firefox extension as .xpi-file from the official site https://addons.mozilla.org/ if not using firefox as a browser? https://addons.mozilla.org/ in this case just ...
Golar Ramblar's user avatar
2 votes
1 answer
677 views

Does Firefox 70's Enhanced Tracking Protection obsolete certain extensions?

Now that Firefox 70 has Enhanced Tracking Protection, are various major plugins obsolete? I'm using these security-related extensions: Disconnect uBlock Origin Privacy Badger Are they still ...
lonix's user avatar
  • 638
0 votes
0 answers
39 views

Add a textbox to the firefox browser toolbar

I am trying to add a textbox that will navigate to a link formulated by adding whatever the user types into it to a preset url and opening a new tab to visit it.However, I did not find informations ...
wzDev's user avatar
  • 1
1 vote
1 answer
319 views

startpage.com requires new permissions: Access browser tabs - what for?

I sometimes use startpage.com, so I installed its Firefox extension. A few days ago, the following information box showed up, informing me that the extension had been updated and needs a new ...
FriendFX's user avatar
  • 915
2 votes
1 answer
571 views

Intercepting input entered into the Firefox developer console?

I am currently in the process of moving my web-dev work from classic IDEs to the web browser console. The console is basically a JavaScript REPL, which is great, but that also means it can only ...
Lucius's user avatar
  • 125
0 votes
1 answer
908 views

Setting the text input value of the Firefox developer console?

I am currently in the process of moving my web-dev work from classic IDEs to the web browser console. This involves frequent editing of existing source code, which right now means... logging the ...
Lucius's user avatar
  • 125
7 votes
2 answers
6k views

how to hide Firefox's Add-ons icons like chrome?

I installed some Add-ons for Firefox but there are many icons on the same row as the address bar. I can hardly type web address on Firefox How do I hide some Add-ons, like how I can hide some ...
wada's user avatar
  • 307
1 vote
0 answers
159 views

Is there an extension to quickly clear / flush / invalidate the Firefox DNS cache (Quantum)

There used to be several DNS flushing add-ons prior to Firefox Quantum. Are any currently available? Is this no longer something that's accessible through the addon API? Yes, I realize that I can do ...
pbarney's user avatar
  • 727
6 votes
3 answers
8k views

Is it possible to open a new tab in a specific container when using Firefox Containers?

I'm using multi-account containers in Firefox to keep my tabs separate from each other. I'm looking for a way to open new tabs in specific containers. Using Cmd+T opens a new tab in a default ...
Matt's user avatar
  • 418
0 votes
1 answer
871 views

LastPass empty error message when autofill credentials

So, I'm using the LastPass extension in Firefox and Chrome and it worked fine at the beginning but now every time I want to save my typed login & password, I receive this empty error message box: ...
MmM's user avatar
  • 181
4 votes
3 answers
3k views

How to analyze popup window with Inspector on Firefox?

I want to inspect Firefox search bar popup window with Inspector by using Ctrl+Alt+Shift+I keys. But looks like impossible due to focus lost event. Is there some other method?
Ernestas Gruodis's user avatar
2 votes
1 answer
2k views

Firefox or Chrome Auto Hide UI

I want to automatically hide the firefox ui until I mouse hover the top of my browser window without having to full screen. I love the windows task bar auto hide feature and hate that I cant find a ...
Pogchamp Letsgodude's user avatar
2 votes
1 answer
143 views

Waterfox automatically Google searching while still typing in address bar

I have the strangest problem I can't seem to find anyone else online having. While typing (as in without pressing 'enter') anything in the address bar, not 3 characters into my string, the page ...
daddy7860's user avatar
  • 181
0 votes
1 answer
571 views

Why is my updated “manifest.json” not being reflected in Firefox?

Using about:debugging#addons I am loading my own add-on. Additive based on WEE. I'm forced to change in manifest.json applications > gecko > id and version after each change in code. When I ...
lukaszpolowczyk's user avatar
1 vote
1 answer
1k views

How can I print a set of links in Chrome or Firefox?

How can I print a set of links in Chrome or Firefox? For example, suppose I have a set of webpages, I have the URLs I want to print each webpage How can I do that without manually going to each ...
barlop's user avatar
  • 23.9k
4 votes
2 answers
7k views

Limit the number of tabs and windows in Firefox

For a user that won't stop opening windows and tabs, and never close anything, then complain that the computer is too slow, I'm looking for a way to set a maximum number of tabs, application wide (not ...
alecail's user avatar
  • 722
0 votes
1 answer
696 views

How do I add a site to an existing LastPass password from that site?

I'm in the middle of switching password managers (from KeePass to LastPass), and I'm running into an issue with LastPass. I've manually moved all my passwords into my LastPass vault, but did not ...
DuckTapeAl's user avatar
0 votes
0 answers
62 views

Redirect specific URL's from Firefox to be opened in Chrome

For some odd reason my enterprise meet.google.com doesn't seem to work for me in Firefox browser. Is there any extension/workaround, that can redirect certain webpages to Chrome? Details: Firefox ...
goutham's user avatar
7 votes
1 answer
4k views

A way to force Firefox to open a file in its Pdf viewer?

I'm trying to view a Pdf file that I found online. Normally, when I attempt to open a Pdf file, Firefox displays it in its default Pdf viewer (called pdfjs, I believe). This is good and normal ...
I_Don't_Code's user avatar
2 votes
1 answer
2k views

Mozilla Firefox forbid removing an addon

I want to create a safe environment in my browser with a couple of extensions that I DON'T want to be deleted by users. I tried using Private Fox to forbid access to about:addons page but I found out ...
Unencrypted's user avatar
1 vote
2 answers
241 views

Save a shortcut for each open tab

Is there a way in firefox (via addon or something else) to save a shortcut for all the tabs in a window to my desktop or downloads folder? I don't want to save them into some internal DB of an addon. ...
xdhmoore's user avatar
  • 675
5 votes
2 answers
5k views

"This add-on could not be installed because it appears to be corrupt" on Waterfox with xpinstall.signatures.required=false

I'm trying to install an add-on: https://addons.mozilla.org/firefox/downloads/file/887261/referer_control-1.31-an+fx.xpi It works fine if I manually download it and then install it as a "temporary ...
Robert Fraser's user avatar
1 vote
1 answer
400 views

Copying Theme from Firefox to Waterfox

How do I copy this theme from Firefox 56 to Waterfox 56? It's apparently not as simple as copy paste in the prefs.js file as I was hoping. Within Waterfox there is no image, only color changes. Is the ...
MrKrawk's user avatar
  • 11
1 vote
0 answers
55 views

all mozilla firefox extensions stopped working today and cannot be updated [duplicate]

After using Firefox Quantum 66 for several months with a set of extensions, I started it today and found, that all of them have been moved to the "legacy extensions" section and disabled. The version ...
user1031560's user avatar
1 vote
0 answers
68 views

All firefox add-ons got disabled and can't download any from Mozilla web page [duplicate]

I have a notebook with Windows 8.1 and Firefox 66.0.3; all the add-ons got suddenly disabled. So I uninstalled them and tried to reinstall them from Mozilla web page but I get a red label that says ...
E_Blue's user avatar
  • 713
160 votes
6 answers
36k views

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's user avatar
  • 4,062
0 votes
2 answers
346 views

In Firefox, how can I filter and extract multiple links located within multiple open tabs?

Here is my situation. I have 100 tabs open in Firefox. Within each tab is 20 unique URLs. I only need 10 of these links. This adds up to 1000 unique URLs I need extracted into a text list, so I can ...
a1chera_'s user avatar
2 votes
1 answer
134 views

Edit Firefox multi container configuration

I have several containers configured on my Firefox and I have been using for a while, so container have information associated. However, sometimes I was not very focused and I used the wrong one for ...
Daniel Perez's user avatar
0 votes
1 answer
60 views

Prevent update of specific Firefox extension

There is an extension I don't want to update, either automatically or manually. I don't even want to see that there are updates. The only advice for this is many years old and doesn't work for the ...
lonix's user avatar
  • 638

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