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

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238
votes
13answers
66k views

How can I simulate a slow connection, or limit the bandwidth that Firefox can use?

Is there a way I can simulate various connection speeds from within Firefox? I need to be able to check http://localhost with varying speeds. I know there are standalone applications that can do ...
41
votes
6answers
94k views

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, ...
40
votes
4answers
13k views

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 ...
24
votes
3answers
14k views

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

I know that this is a very old issue, but it is still relevant as there has not been a solution to it in over 3 years now. But what I am essentially asking for is a Firefox equivalent to the Chrome ...
19
votes
2answers
1k views

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 ...
17
votes
3answers
346 views

Why do add-ons become incompatible when upgrading firefox

My default browser is Chrome, but when I occasionally use Firefox for whatever reason there is often an update to it. Almost every time I update Firefox some of my add-ons become incompatible. Why is ...
15
votes
9answers
5k views

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 ...
15
votes
5answers
2k views

chrome/firefox extension that fixes google search links

Is there any extension for a browser that allows you to change the structure of links in google search, so that it doesn't look like this: ...
14
votes
2answers
8k views

Is there a Chrome version of Firefox Tilt?

Tilt is a cool new developer-oriented FF extension that lets you visualize a page in 3D. Is there something similar for Chrome?
13
votes
3answers
84k views

What is Pando Web Plugin?

Does anyone know what the the Firefox Plugin Pando Web Plugin 1.0.0.1 is?
12
votes
2answers
6k views

Google Chrome extensions in Firefox

Chrome has a significantly more restricted extension API than Firefox; it mainly just consists of content scripts (with background pages) and a couple of hooks for context menus and popups and such. ...
11
votes
7answers
2k views

Next Firefox version: how to *easily* check extension/add-on compatibility?

Question: I currently use Firefox 3.6. Before I install the next version of Firefox (Firefox 4 at this time), is there an easy way to check which of all my installed extensions/add-ons are ...
11
votes
3answers
736 views

Setting “allow pages to choose their own fonts” on a per-domain basis in Firefox

Normally I use Firefox with the option "allow pages to choose their own fonts" UNselected, but now and again there's a site I'd like to view using their fonts instead of mine... Is it possible to set ...
11
votes
5answers
9k views

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 ...
10
votes
2answers
983 views

How to stop Firefox from updating?

Anyway here is my problem. I'm currently on beta channel (Firefox 6) which was recently upgraded and broke some extensions. Now I gather those extensions will be upgraded in the future and they'll ...
10
votes
2answers
2k views

Is there a way to search the text of my browsing history in Firefox?

I often find myself in the situation where I know I saw something in a web page recently, but don't remember where. I would therefore like to be able to do a full-text search of the contents of my ...
9
votes
3answers
1k views

How do streaming videos download works?

I use Firefox and the Video DownloadHelper plugin to download videos from YouTube, etc. How do these plugins and sites automatically obtain download links for these videos?
9
votes
2answers
231 views

firefox addons and their silly news tabs

Something like 30% of the addons I have in firefox update every other week and feel the need to pop open a tab about how awesome they are and all the cool things they changed. I just don't care at ...
8
votes
7answers
514 views

Any Firefox extensions that track how long I stay on a web page?

I want to analyze my web surfing habits, and could use something to monitor how long I stay on a page with seconds precision. Anything like this?
8
votes
7answers
2k views

faster alternative to firefox tab groups

I had about 200 tabs open in about 15 tab groups. Needless to say, Firefox wasn't lightning fast (even with the "don't load tabs until selected" option checked). The solution that dramatically ...
7
votes
2answers
140 views

Which Firefox add-on checks if the latest plugins are installed?

Is there a Firefox add-on that checks if I have the latest version of Adobe Flash, Sun Java, etc installed?
7
votes
1answer
1k views

Adblock Plus - disabled by default and enable per site

I have Adblock Plus disabled by default at the moment, and I would like to block ads on some sites. Is this possible with Adblock, or do I need another addon?
7
votes
3answers
954 views

How to remove search providers in late 2014 Firefox?

The latest Firefox (now v. 34) has changed the way it administers search providers, so that they can be selected or un-selected, also new ones can be added, but they cannot be removed. That is ...
7
votes
3answers
4k views

How can I spell check web pages from the browser?

How can I spell check web pages when browsing them? I've added the After the Deadline Chrome extension, but it only seems to work on forms and not whole web pages. I'm happy to use Firefox if that ...
6
votes
5answers
9k views

How to disable Flash plugin on Firefox, but with a whitelist? I mean *really* disable it

The background Ok, this is a toughie. I'm a Firefox user, and I don't like Flash ads. They slow down my netbook, they slow down my Macbook, they sometimes play sound or obscure part of the page, all ...
6
votes
3answers
9k views

Browser plugin to resize window for brower testing

When im making a website i work on my 22" external display, which is fine, but to get a better idea of what the site will look like on smaller screens i have to resize my browser window. At the ...
6
votes
3answers
161 views

Best way to use the Firefox search box input to construct a url and navigate to it

I'd like to use the Firefox search field at the top right to automatically navigate to a particular URL based on the value of the search string. Example: If I type "Kangaroo" and hit enter I'd like ...
6
votes
2answers
2k views

How to set up firefox so that a new tab opens next to the currently open tab?

Is there a way (either through add-ons or preference tinkering?) to set up Firefox 17.0.1 (for Mac OS X) to open up new tabs next to the tab I am currently browsing in as opposed to at the end of my ...
6
votes
1answer
2k views

Is there a Firefox extension that prevents websites from detecting what operating system you're using?

Is there a Firefox extension that prevents websites from detecting what operating system you're using? Also, if there isn't a plugin, is it possible to write one? I know I can disable websites from ...
6
votes
3answers
11k views

Is there a Chrome(ium) alternative for the Firefox “Self-Destructing Cookies” extension?

I am huge fan of the Firefox extension https://addons.mozilla.org/de/firefox/addon/self-destructing-cookies/ and am looking for something like this for chrome. Note: I am not looking for some random ...
6
votes
2answers
2k views

How to see a list of all installed Firefox extensions and export it?

I was wondering if there is a functionality or maybe another addon for Firefox were I can export all my addons into a simple list - preferably txt or html. I mean only the names because I start to ...
6
votes
1answer
532 views

Setup Firefox to save .pages as .zip automatically

What do I want to do? I would like Firefox to save files with the .pages extension as .zip files automatically. Scenario You are browsing through your emails and you notice your friend just sent ...
6
votes
3answers
2k views

Delete cookies in Firefox after specific interval of time

Is there any Firefox addon which will delete my all cookies after specific interval of time. I do not want to block any site's cookie; I just want all the cookies to be deleted after every 30 seconds ...
6
votes
2answers
2k views

How to stop chrome/firefox downloading a gif?

When I visit any page containing some animated gifs (Google+, 9gag etc), all those seem to start loading. My bandwidth is limited and I don't want those to be downloaded unless I really want to view. ...
5
votes
5answers
8k views

Hide all images on a page in Firefox (plain text only)

Can I hide all images displayed on a page in Firefox? I want to view the page in plain text only (with no images). Is there any Firefox add-on for this?
5
votes
4answers
7k views

Log HTTP and HTTPS browser traffic, decrypting the latter

Is there a way that I can save all HTTP and HTTPS browser communications (including request, response, full headers and body) to files on my computer? The HTTPS communications must be saved ...
5
votes
4answers
3k views

Firefox 29 + Tree Style Tabs + Tab Mix Plus: Open new tab with double click

After updating to FF29, I can't open a new tab when clicking on the empty area below the tabs. Edit: This is confirmed to be a change made by FF29, no addons have anything to do with it. See answer ...
5
votes
1answer
2k views

Vimperator seems to search with Google by default – how to change that

On a Debian system I use Mozilla Iceweasel 10.0.11, with Vimperator 3.5. I want to change the search engine which vimperator (not iceweasel) seems to use by default. If I type things like :open ...
5
votes
4answers
2k views

Is there any Firefox or Chrome add-on to highlight search terms (and jump to them ?)

There is a cool feature of the Google Toolbar that I have been finding frustrating to live without (since the Google Toolbar is not supported anymore for Firefox, my main browser): When you google, ...
5
votes
2answers
254 views

Browse local copies of websites when possible (Firefox with slow internet connection)

I am on a slow internet connection. I would like to use Firefox to load local copies of websites when it exists and is relatively recent (say one week). An example usage would be browsing a lot of ...
5
votes
2answers
14k views

Stop automatic video play in firefox

Is there a way to let embedded videos (primarily flash, but I'd prefer something that will also work with HTML5 video) automatically background load; but not start playing until explicitly started? ...
5
votes
2answers
686 views

Stop Firefox's Session Restore from Loading All my Tabs at Once

When I use Firefox I often have many tabs and many windows open (even more so now that they have panorama). I often use the session restore feature because I don't want to loose all my open windows ...
5
votes
3answers
496 views

Firefox addon for managing text width

While reading, I prefer that the text width is "reasonably" small and centered in the middle of the window (just to make an example, pick a blog post layout or the layout of SuperUser itself, which I ...
5
votes
2answers
647 views

Is there a browser extension for Chrome or Firefox to individually mute audio per page in each tab?

Is there a browser addon (Chrome/Firefox) to individually mute audio per page/tab? This would be great when listening to music while browsing sites that play audio without asking for user prompt ...
5
votes
1answer
546 views

Profiling add-ons in firefox

One new feature of ie9 I like is that it alerts you to which add-ons are making your browser run slowly. Is there a way to get access to similar information in firefox?
5
votes
2answers
891 views

Force Firefox to cache a URL for a specific period of time

One of the companies I work with has a web app hosted over a slow DSL line. There is something amiss with the configuration of their server or version of software they are using which means that every ...
5
votes
1answer
494 views

Is it better to use a Userscript version of a Firefox Add-On?

I'm a heavy Firefox user with many add-ons. I also use some userscripts via Scriptish. I found some Firefox extensions that offer both the userscript and add-on version like A Bit Better RTM. ...
5
votes
2answers
829 views

Multiple search provider boxes in Firefox

I am using 3-5 search providers usually when browsing. However, default search box only allows to manually change search provider and then perform search. I'm looking for the way to have multiple ...
5
votes
2answers
515 views

Firefox marker-line like extension?

Is there any marker-line like firefox extension? I would like some way to mark where I was before I scrolled so I don't need to remember exactly where I was before scrolling. I also use Vimperator, ...
5
votes
2answers
2k views

Quick Scroll for Firefox

Is there an equivalent to the Chrome Quick Scroll add-on for Firefox? https://chrome.google.com/extensions/detail/okanipcmceoeemlbjnmnbdibhgpbllgc This is a killer feature of the Chrome browsing ...