Open-source web browser. Include tag of operating system if it's important/dependent.

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214
votes
13answers
50k 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 ...
100
votes
2answers
6k views

Why does Firefox use the “chrome://” protocol / schema in URLs?

When I want to configure an addon, for example Ghostery, the tab shows a URL like this one: chrome://ghostery/content/options.html What does it mean? Does it have something to do with the Chrome ...
81
votes
5answers
244k views

How to install the real Firefox on Debian?

Debian 6 ("Squeeze") uses a rebranded version of Firefox called Iceweasel. It, however, lacks plugin support, and most of my favorites don't work. So what is best way to install the "real" Firefox on ...
81
votes
1answer
5k views

Strange dotless decimal notation of IP address… How does it work?

Earlier today I thought I had a URL in my clipboard, but I actually had four 9 digit integers copied from a spreadsheet, which were identification numbers from a proprietary system. Completely ...
52
votes
1answer
1k views

How is a program that's not in my path being run? [duplicate]

Possible Duplicate: Why am I able to execute a program that is not in my PATH environment variable? I was teaching a coworker about %PATH% and found that if I run "Firefox", it works, but ...
49
votes
7answers
38k views

How can I clear a single site from the cache in Firefox?

In Firefox, I occasionally need to clear my cache to fix a website. But clearing the entire cache seems like extreme overkill. Is there any way to just clear the one site from my cache?
47
votes
1answer
2k views

Why does Firefox force a 3 second delay before installing add-ons?

I presume there is a security benefit to Firefox's delay before installing add-ons, but for the life of me I can't figure out what it is. (Yes, I know you can disable the delay.) If you answer this ...
47
votes
1answer
17k views

Why is YouTube buffering/loading behavior so horrible in Chrome?

I have been suffering from this for months, possibly even years, and I still don't have the slightest clue about the cause. Let's say I open a video on YouTube in Chrome, like Jamie Hyneman's ...
45
votes
7answers
89k views

How to turn off the Firefox cache?

I'm using Firefox 3.5.2. For some reason, it has cached a page and won't update. For example, I added an alert('test'); statement to some JavaScript code which is loaded on the page, but Firefox ...
44
votes
10answers
51k views

Force-refreshing only JavaScript files in Firefox and Chrome

I want to clear only JavaScript files from my web browsers (Firefox and Chrome). I am doing JavaScript debugging, and it's annoying that my JS just won't get updated whenever I change my JS files. The ...
44
votes
5answers
6k views

How to Determine which Firefox Add-ons are Using the Most Memory

I love Firefox for its add-ons. I have a lot of them installed, which obviously increases memory use. But it seems that some add-ons are better than others in that department. Does anyone know a way ...
36
votes
7answers
66k 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, ...
35
votes
6answers
56k views

How to sync bookmarks across Google Chrome and Mozilla Firefox bookmarks?

How to sync bookmarks across Google Chrome and Mozilla Firefox bookmarks? As I, currently, understand, Google Chrome puts bookmarks seperatly from Google Bookmarks, which is accessible in Firefox by ...
34
votes
3answers
11k views

Can a site detect if I use AdBlock in Firefox?

I recently visited (an official) website in search for an episode of a TV-show. The site popped an information dialog stating that I had to disable AdBlock to see the content. Is this at all possible ...
34
votes
8answers
13k views

How safe is Firefox password manager?

I have been using the Firefox password manager for long time, but never checked/verified how secure it is.
33
votes
5answers
11k 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 ...
33
votes
6answers
17k views

Determine which tab in Firefox is using CPU resources?

Is there anything in the current Firefox 3.x similar to shift-esc in Google Chrome? There is something that occasionally takes up enough CPU to make Firefox unresponsive - but with multiple windows, ...
30
votes
7answers
78k views

How do I Install Flash Player 10 without Adobe Download Manager?

How do I get Flash Player 10 (on Firefox) without installing the Adobe Download Manager?
29
votes
6answers
124k views

Is there an “about:config” (Firefox) In Google's Chrome?

Anything similar to "about:config" (Firefox) In Google's Chrome ?
28
votes
7answers
7k views

Changing Firefox Tab Cycle Order

When you use Ctrl-Tab in Firefox, you move through tabs in the order that they are listed in the tab bar at the top of the window. I would prefer that when I use Ctrl-Tab the next tab that I switch ...
27
votes
3answers
1k views

Do disabled Firefox extensions make Firefox slower?

Do disabled Firefox extensions make Firefox slower? I know that extensions make browsing slower, but what about extensions that are disabled and not in use?
25
votes
5answers
18k views

Install Firefox 4 Beta alongside Firefox 3.6?

I have Firefox 3.6 installed and have just seen that Firefox 4 Beta is available. Is it possible for me to install Firefox 4 Beta alongside my current Installation of Firefox?
25
votes
6answers
5k views

How to disable permission to read 'System Fonts' and 'Browser Plugin Details' in Chrome and Firefox

Going to http://panopticlick.eff.org/ I can see that that Firefox and Chrome expose more about 'System Fonts' and 'Browser Plugin Details' than I prefer. How can the permission of a web page to ...
25
votes
7answers
6k views

Flash overrides Firefox keyboard shortcuts — how to turn that off?

I often cycle through my Firefox tabs using Ctrl+Tab and Ctrl+Shift+Tab. But whenever it reaches a tab that is running a Flash (or similar) plugin, Ctrl+Tab and Ctrl+Shift+Tab won't work anymore, ...
25
votes
8answers
51k views

How can I get a new browser session when opening a new tab or window on Firefox/Chrome?

When opening new Internet Explorer window, a new browser session is issued. Therefore you can login with two different accounts on the same service (let's say gmail). The same does not apply when ...
25
votes
7answers
2k views

How to forbid keyboard shortcut stealing by websites in Firefox

Many websites, especially everything involving rich text editing (this site is guilty as well), steal keyboard shortcuts normally used to control Firefox and make them do something else instead. It is ...
24
votes
6answers
14k views

What makes LastPass so secure?

I can't simply understand how using LastPass is secure. All an attacker need to do is to compromise the single LastPass account and then he has also compromised all other websites. What's so good ...
24
votes
7answers
37k views

How to download favicon from website?

When you browse a web site, the "favicon" icon shows up next to the URL (or the bookmark). If I want that graphic, is there a way to download it directly from the site? I'd prefer to download it ...
24
votes
11answers
48k views

Change the white background in webpages to another color

I'm currently using a dark theme in firefox. It looks really nice, but many webpages use a plain white background. The resulting contrast is a little unpleasant and sometimes hurts the eye when I ...
21
votes
3answers
7k views

How do I search a page using a regular expression in Firefox?

I want to use regular expressions to search a page in Firefox. Is this possible?
21
votes
1answer
8k views

What does Firefox do when “scanning for viruses” after download?

Never mind the fact that Firefox is a browser and not a AV tool, but what exactly does it do after a download? Even on systems that have an up-to-date AV this generates a pause of several seconds ...
20
votes
4answers
4k views

Make Chrome's Omnibar behave more like the Firefox AwesomeBar

One of my favorite features of the Firefox AwesomeBar is that I can simply type a substring of any URL or page title in my history and it finds all matches sorted by how frequently they were accessed. ...
20
votes
4answers
11k views

Is there a HTML5 Validator plugin for Firefox?

Is there a plugin for firefox to validate HTML 5? I've always used this but if my webpage has a <!DOCTYPE HTML> doctype it complains about it not having a doctype at all. I specifically would ...
19
votes
4answers
11k views

Firefox quickly forget HTTP Basic Auth

How can I make Firefox "invalidate" it's saved HTTP Basic Auth credentials for a website from the client side? Currently, I have to restart the browser, which is rather cumbersome with multiple tabs ...
19
votes
7answers
19k views

Is there a method to export the URLs of the open tabs of a Firefox window?

If I have a Firefox window open that contains 10 tabs, is there a way in Firefox or by a plug-in to get the URLs of those 10 tabs as a text file or some other format? Right now if I want to do this I ...
19
votes
3answers
5k views

Clear 301-redirect cache in Firefox

Is it possible to clear only 301-redirects from Firefox's cache? CTRL+F5 doesn't do the job since you just reload the target without caching but do not clear the cached redirect. An option to disable ...
18
votes
3answers
893 views

In Firefox 4, how do I get the RSS feed button back?

I've upgraded to Firefox 4 and the RSS feed button was removed from the address bar! How do I get it back?
18
votes
4answers
7k views

regex search on google-chrome or firefox browsers?

How can I search for expressions like 'foo|bar' on webpages using browsers like google-chrome or firefox?
18
votes
3answers
8k 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 ...
17
votes
17answers
110k views

How to download a URL as a file?

A website URL has "hidden" some MP3 files by embedding them as Shockwave files, as follows. <span class="caption"><!-- Odeo player --><embed ...
17
votes
3answers
330 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 ...
17
votes
2answers
10k views

How to override the CSS of a site in Firefox with userContent.css?

In Mozilla Firefox, I want to create userContent.css which overrides the CSS of a site, say this one. Where should I create the file? Could you please describe it based on Windows 7?
17
votes
2answers
11k views

Does Firefox support wildcards in NTLM / Negotiate URI's for autologin?

Following this question about Windows Domain Authentication with Firefox, does FF support using wildcards in the URI's? I'm not finding anything where it mentions support either way.
17
votes
3answers
16k views

Windows Domain Authentication with Firefox

We have many internal web sites on our domain: a.blah.com b.bhah.com c.blah.com IE authenticates automatically using the currently signed in domain user but fire fox pops up a login box, sometimes ...
16
votes
7answers
10k views

Vimperator copy/pasting

I'm trying out Vimperator. I mainly wanted it for the hjkl scrolling, and I like its "hint" system for following links. These two features are really all I need; I think. I don't mind the other ...
16
votes
2answers
10k views

Firefox - always show the tabs in fullscreen mode

Full screen can be more fun if I can always see my tabs (by default you can see when you hover your mouse around that area) and my taskbar. I know how to make taskbar always appear. Any idea how to ...
16
votes
2answers
919 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 ...
16
votes
3answers
2k views

How to make Firefox to spellcheck in multiple languages simultaneously?

I want to Firefox to assume that text may be in a mixture of languages and words should be looked up in multiple dictionaries. (For example, everything in en-GB, en-US, ru, be and be-classic should be ...
15
votes
2answers
24k views

How to track url redirects in browser?

I have typed http://example.com/load/ in my browser window and pressed "ENTER" key. Now on press of enter this website redirects me to http://example.com/load/1/ and then http://example.com/load/2/ ...
15
votes
3answers
29k views

How do I reset the zoom level in Firefox?

How do I reset the zoom level in Firefox back to the default?