Questions tagged [firefox]
An open-source web browser developed by Mozilla. If relevant to the question, also include the tag of your operating system.
8,783
questions
351
votes
16
answers
218k
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?
331
votes
12
answers
123k
views
Determine which tab in Firefox is using CPU resources?
Is there anything in the current Firefox similar to the Task Manager in Google Chrome? (Shift + Esc)
There is something that occasionally takes up enough CPU to make Firefox unresponsive - but with ...
311
votes
9
answers
120k
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 ...
233
votes
20
answers
137k
views
How to add a custom search engine to Firefox?
Is there a way I can add a custom search URL to the Firefox search bar? e.g. I'd like to provide a URL such as http://blahblah.com?search=%s, where Firefox replaces the %s with the content of the ...
220
votes
3
answers
33k
views
How can this website reidentify me even after deleting all of my browser's history and using a VPN?
The website dropmail.me is able to successfully reidentify me (and offer my last used temp mail addresses via. "Restore access") despite doing the following:
Delete all my browsers history which ...
179
votes
11
answers
547k
views
How to download favicon from website?
When you browse a website, the "favicon" icon shows up in the tab or next to the URL (or next to the bookmark).
If I want that graphic, is there a way to download it directly from the site? I'd ...
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)
136
votes
6
answers
51k
views
Firefox doesn't allow to paste into WhatsApp web anymore?
Since today, with Firefox, I cannot paste text into the text input field of whatsapp.web (the PC version of WhatsApp) anymore.
the version is FF 116.0.2 (64-bit) on Windows 10, previous versions of FF ...
133
votes
2
answers
118k
views
How can I 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.
Where should I create the file (Windows 7)?
129
votes
11
answers
559k
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 ...
128
votes
16
answers
124k
views
How do websites block selecting text and how do I unblock that?
There's a website (example) that somehow blocks selecting text. Also it blocks Ctrl+A to select everything, there is also no “Copy” in the popup menu.
What I have tried:
Some sites use JavaScript to ...
128
votes
2
answers
16k
views
Why does Firefox use the "chrome://" protocol / schema in URLs? [duplicate]
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 ...
125
votes
5
answers
22k
views
How do these icons work: 🌍🌎🌏✅️?
I can see these characters as colored icons:
🌍🌎🌏✅️
It only works in Firefox for me. If you can't see the characters in color, it looks like this on my system (it's probably font-dependent):
I ...
125
votes
9
answers
78k
views
How do I make Firefox 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 ...
115
votes
6
answers
551k
views
Is there an "about:config" (Firefox) In Google's Chrome?
Anything similar to "about:config" (Firefox) In Google's Chrome ?
115
votes
1
answer
71k
views
How to order windows of the same program on taskbar [duplicate]
I'm using Windows 8 and appreciate the ability to reorder my programs at will in the taskbar. However, for different windows of the same program - I have three Firefox windows, for instance - I can't ...
113
votes
23
answers
136k
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 ...
105
votes
4
answers
51k
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?
97
votes
13
answers
30k
views
Switching back to last tab on Firefox
Is it possible to switch back to the last tab used (tab toggling)? I often like this behaviour on the Mac OSX when switching between apps with the CMD + Tab shortcut key.
96
votes
3
answers
14k
views
How does Firefox know my ISP login page?
To access the Internet, I have to log in at my ISP-provided login page which is a
private IPv4 address (192.168.xx.xx). If I open Firefox without logging in to that
account, Firefox shows this ...
96
votes
11
answers
21k
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 ...
93
votes
2
answers
46k
views
Is there a way to identify the busy (CPU-consuming) tab in Firefox? [duplicate]
Sometimes there's a nasty, guilty, CPU-hogging tab in Firefox that's maxing one of my CPU cores and making the whole browser sluggish. I'd like to find it and close it.
Sometimes I get lucky, but ...
92
votes
6
answers
99k
views
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 ...
92
votes
6
answers
21k
views
How to disable Ctrl+Q shortcut in Firefox on Linux
Since Firefox 57 there is no way to disable Ctrl+Q shortcut by plugin on Linux (see this bug). All workarounds I've found are based on setting the global Ctrl+Q shortcut to "steal" it from Firefox. ...
90
votes
1
answer
8k
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 ...
88
votes
2
answers
14k
views
How to disable address bar expansion in Mozilla Firefox 75?
With the latest update to Firefox, there is a feature that I would like to disable. When you open a window/tab or place the cursor in into the address bar, it becomes a bit bigger. How can I disable / ...
87
votes
7
answers
133k
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 separately from Google Bookmarks, which is accessible in Firefox by ...
85
votes
9
answers
162k
views
How to take a screenshot that includes a scrolling element within a web page in Firefox?
I need to take a screenshot of an entire webpage. The trick is that I need the screenshot to include the entire contents of a single element that does not fit in the screen.
It is a single ...
85
votes
8
answers
72k
views
Does Firefox still have the 3D DOM viewer?
I can't seem to make out this little feature that was once there in Firefox.
The 3D button that was there in an earlier version of the dev tools is gone and I can't seem to find any trace of this ...
83
votes
1
answer
16k
views
Is it possible to leave Firefox open when closing its only tab?
I am using Firefox 59.0.2 (64-bit) on Ubuntu 16.04 (Xenial Xerus).
When there is only one tab opened in Firefox, closing the tab will also close the web browser. This is contrary to that in Chrome ...
81
votes
7
answers
11k
views
How to block Hot Network Questions in the sidebar of Stack Exchange network?
Operating system is Ubuntu 14. Firefox is 50.1.0
This is what I have tried:
I restarted firefox after that. There was no effect.
What is the way to block those hot questions on the sidebar?
80
votes
7
answers
349k
views
How to bypass the "secure connection failed" warning in Firefox 33
Since installing Firefox 33 a "Secure Connection Failed" error is no longer bypassable using the
"I Understand the Risks" button - it's gone!
Is it still somehow possible to ignore certificate errors?...
73
votes
10
answers
152k
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 doesn'...
71
votes
12
answers
158k
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 ...
65
votes
4
answers
23k
views
Disabling the "Enable notifications?" popup in Firefox
If I'm on a page that has web notifications (like Slack or others), Firefox asks me if I want to enable them. However, my choices are "Yes" or "Ignore for now". The problem is, if I select "Ignore", ...
65
votes
9
answers
14k
views
How do I make Firefox spellcheck in multiple languages simultaneously?
I want 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 ...
64
votes
11
answers
135k
views
Firefox hide everything except content area of the browser
Is there a possibility to hide all borders and bars in firefox like address bar, navigation bar, window title and tabs, so the remaining area is just the content area of the browser?
I would like to ...
64
votes
5
answers
52k
views
How to switch back to Firefox' old style of tabs?
The recent update (89 I think) causes all tabs to render in the same continuous shading, which makes it somehow more difficult to spot each tab's start and end (regardless of the favicon, I'm sorry, ...
64
votes
3
answers
130k
views
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 ...
63
votes
2
answers
16k
views
Disable two-finger swipe on Firefox
When I scroll along the page or some scrollbox with two fingers on MacBook Pro touchpad, and it can be no longer scrolled to the left, Firefox decides I want to go back in history.
What can I do to ...
62
votes
13
answers
225k
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 ...
62
votes
10
answers
136k
views
How to convert a webpage to PDF with preserving its look (exactly as on web browser) and text/links?
I'm looking for a way to convert a webpage to PDF, but preserving the webpage's look. Also preserving webpage's text (being selectable), searchable [Generating image screenshot for the webpage would ...
61
votes
5
answers
163k
views
Prevent automatic redirects in Firefox
Firefox used to prevent automatic redirects and have a button you could use to opt-in to a redirect. However, a update a couple of months ago eliminated this feature and now Firefox (version 35) ...
60
votes
9
answers
72k
views
Can I hide native tabs at the top of Firefox?
I've started using Tree Style Tab on Firefox. It's a great solution for cases where you have many, many tabs and you want to add some level of organization to it.
It's becoming increasingly ...
60
votes
1
answer
29k
views
How can I block the “Sign in with Google” prompt on websites? [duplicate]
On many websites that require login, those annoying Google login prompts appear:
There are several tutorials on the Internet on how to avoid this, for example, this one on How-To Geek, which suggest ...
58
votes
6
answers
46k
views
How to run a regex search on Google Chrome or Firefox?
How can I search for expressions like 'foo|bar' on webpages using browsers like Google Chrome or Firefox?
58
votes
8
answers
54k
views
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 ...
57
votes
6
answers
62k
views
How to make the about:blank page black or any other color in Firefox?
Is there a built-in way in Firefox to blacken or to colour the about:blank page?
Will I maybe save some energy by doing so?
57
votes
10
answers
28k
views
Manually add username/password to Saved Password list?
I logged into Mozilla's Bugzilla. I noticed Firefox did not save my password.
How do I manually add my username and password to Firefox's Saved Password list?
57
votes
1
answer
2k
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 was ...