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Questions tagged [firefox]

An open-source web browser developed by Mozilla. If relevant to the question, also include the tag of your operating system. For questions specific to version 57 or newer, use [firefox-quantum] instead.

2,143 questions with no upvoted or accepted answers
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12
votes
2answers
2k views

How can I make non-anti-aliased text look good in Firefox on Mac OS X?

After being a Windows user for the last 10 years, I got a MacBook Pro, which I'm working on configuring to my liking. I find small-size anti-aliased text to be blurry and hard to read, so I typically ...
8
votes
2answers
6k views

Error code: ERR_NAME_RESOLUTION_FAILED

I get the error code: ERR_NAME_RESOLUTION_FAILED whenever I try to go to http://reddit.com on my computer. So far I have tried: setting my static DNS server to 8.8.8.8 and 8.8.4.4. executing netsh ...
8
votes
3answers
4k views

Chrome-like omnibar in Mozilla Firefox

How to make Firefox's awesome bar (address bar) to work like in Google Chrome? I mean especially search (words search, not URLs) auto complete from search history. This addon does not answer my ...
7
votes
2answers
10k views

How Can I Stop Scripts on a Page in Firefox?

How can I stop scripts on a page in Firefox? I don't care if the solution is draconian. Super-tech-savvy solutions are also fine. Clarification: I don't want to turn off scripts permanently. I want ...
7
votes
1answer
703 views

Firefox equivalent of : google-chrome --app=http://website.com

A specific website can be launched in Google Chrome without any visible interface (navigation bar, tabs or menus) using the command : google-chrome --app=http://website.com Is there an equivalent for ...
7
votes
1answer
1k views

Firefox: How to force address bar to expand/wrap over several lines so can see whole URL?

The URL in question has a long user ID string so the interesting part of the URL appears at the end which is always off-screen. Anyone know how I can go about this?
6
votes
0answers
2k views

Is there a way to limit cpu usage per tab in Firefox?

Opening 20+ tabs in Firefox inevitably leads to a situation where 2-3 tabs are constantly using a fair amount of CPU, slowing the entire system down. I wonder if it's possible to impose a limit on ...
6
votes
1answer
557 views

Why does firefox not use Consolas font while fc-match consolas shows it?

Visiting a pages that use the Consolas monospace font (e.g. [1], minimal example at [3]) instead renders Nimbus Mono. I installed the Microsoft fonts according to the arch wiki[1] using the ttf-ms-...
6
votes
2answers
1k views

Can I keep firefox running in the background?

I'd like to keep Firefox running in the background for quick opening of new windows (on Lubuntu with i3). Is this possible by changing settings, installing extensions, etc.?
6
votes
1answer
703 views

How to use Firefox and other non-RFC1929 complaint programs with auth'ed SOCKS5? Local proxy chainer?

I own a SOCKS5 subscription which requires authentication. I want to use it with FoxyProxy and other programs which do not support auth'ed socks5 (just SOCKS5 with no auth). Note that you cannot enter ...
6
votes
1answer
235 views

How to reload all Firefox tabs in one specific group(Tab Candy)

I've started using Tab Candy recently, which has been in Firefox since version 4 apparently. One thing I would like to be able to do is reload all tabs in one such group I created, but not the others. ...
6
votes
1answer
1k views

How to prefer ipv6 over ipv4 only for specific websites?

I only have ipv6 connectivity via a HE tunnel on my router, so normally I want to prefer ipv4 over ipv6. For some websites however, I would like to prefer ipv6. Right now I have just set ...
5
votes
1answer
1k views

How to disable picture-in-picture in Firefox?

Last month, probably in Firefox 66, a new feature showed up - picture in picture video. Now when I exit a YouTube tab playing a video and go somewhere else on the website, the previous video hangs in ...
5
votes
1answer
167 views

How to disable spell checking in Firefox for a specific website/domain?

I want spell checking enabled on Firefox except in a few websites. How can I permanently disable spell checking in a specific website or a domain, e.g. foo.xxx? I know I can right-click and remove ...
5
votes
0answers
647 views

Browser plugin enabling DANE protocol with Firefox, Chrome or other browser?

Context: I'm setting up a .bit domain on the Namecoin blockchain, and I want to use TLS with it. According to my understanding, DANE is a protocol whereby valid TLS keys for a domain are discovered ...
5
votes
2answers
956 views

I enabled Multiprocess Windows in Firefox 49, but still 1 process

in Firexfox 49 I just enabled Multiprocess Windows. browser.tabs.remote.autostart set to true, also extensions.e10sBlockedByAddons to false and adding browser.tabs.remote.force-enable equal to true. ...
5
votes
0answers
601 views

Ubuntu Trickle Will Not Open Chrome

I'm trying to open Chrome with trickle to throttle the upload speed so I can test a sites image uploading progress display, but the build in dev tools for chrome only allow throttling for downloads. ...
5
votes
1answer
291 views

Videos flicker during play back 2 GPUs Multi-Monitor setup

I have a multi-screen desktop. I have 4 screens in total. Three of them are in NVIDIA Surround setup. My issue is when playing any video on my right most screen the video will blink (only the video ...
5
votes
1answer
1k views

Even though FireFox portable is set as default browser, it doesn't launch when I press the keyboard key to launch web browser

I want to use Firefox portable as my main browser. I noticed when I use the shortcut key built into the keyboard to launch the web browser, something strange happens. A version of Firefox opens up but ...
5
votes
1answer
927 views

How does Google Chrome know my Firefox history if I never imported it?

I have Firefox and Google Chrome installed in the same machine (Linux). It happens when I type something in Chrome Omnibox it suggests pages I have already visited in Firefox. I have never connected ...
5
votes
4answers
6k views

How to recover lost add-ons in Firefox?

When I upgraded to Firefox 7, all my add-ons (except for a few) were lost. Is there any way I can recover those add-ons (or at least find out what add-ons I had installed before the upgrade broke ...
5
votes
2answers
7k views

Websites not loading correctly since Windows 8.1 upgrade

I finally upgraded my work PC to Window's 8.1 Pro on Monday (from 8 Pro), but since then I have been having problems with websites not loading correctly. This issue is occurring in both Firefox 27.0.1 ...
5
votes
3answers
3k views

Firefox 57 Not Asking To Save Passwords (certain sites only)

According to this, https://stackoverflow.com/questions/3868299/is-autocomplete-off-compatible-with-all-modern-browsers/21348793#21348793, browsers ignore autocomplete="off" for login/password fields. ...
4
votes
0answers
54 views

Unable to input UTF-16 characters in firefox

I want to insert greek characters, via a keyboard mapping I've made, when working in firefox (and Jupyter Notebook). I am able to use ctrl+cmd+space to add characters like 𝝭 𝝭 MATHEMATICAL SANS-...
4
votes
0answers
847 views

Telegram web client does not remember my login in Firefox?

I have recently reinstalled Firefox (my OS is macOS 10.14 Mojave) and the Telegram web client no longer remembers my login. Always used to work fine before, but not anymore. Every time I start ...
4
votes
0answers
596 views

I Need to Keep a Window Active

I need to keep a browser window active while I use another window. "Keep-on-Top" is not what I'm looking before because when I switch pages, it still goes inactive. I'm trying to keep a page ...
4
votes
1answer
108 views

How to assign a hotkey to Firefox container

I use Firefox Containers functionality. But I normally open new tabs using ctrl+t. How can I assign a hotkey to open a new tab in a particular container?
4
votes
0answers
1k views

Trouble installing first Greasemonkey script on TBB (Firefox Tor Browser)

I installed the Greasemonkey addon, v. 4.1, which is that last version that works with Firefox 52, which is where the latest TBB is at. (TBB is a special version of Firefox.) Clicking on "New user ...
4
votes
0answers
1k views

How to backup/restore Firefox bookmarks in JSON format from the command line?

In Firefox I can open the bookmark management via the menu Bookmarks → Show All Bookmarks and use the functions Backup resp. Restore to save resp. load an entire bookmark tree in JSON format. As far ...
4
votes
1answer
279 views

Chrome, Firefox, Edge all unable to download a file - but Powershell can?

I have a file that is hosted in Azure container storage as a blob. When I try to download the file by pasting the (public) URL into Chrome, I get the error "Failed - Network error" about 1MB into the ...
4
votes
2answers
1k views

Custom DuckDuckGo search engine in Firefox >= 57 Quantum

I use DuckDuckGo search engine. I have customized it and saved my settings to the cloud. Now I would like to use the customized version as my default Firefox 57 search engine. Is it possible to edit ...
4
votes
0answers
298 views

Chrome bookmarks beside address bar

I use Firefox and I want to change for Chrome, in Firefox you can put bookmarks right next to your address bar, which is great because it uses a lot less screen space. Is there a way to do this in ...
4
votes
1answer
464 views

Freshly installed Firefox unusable after Windows 10 reboot. Renaming the exe and rebooting “solves” the issue

I am experiencing the weirdest bug with multiple recent versions of Firefox since I switched to Windows 10 (Pro). After each reboot, Firefox appears to be completely bugged: saved and new tabs are ...
4
votes
0answers
383 views

Browser tabs turn black

Around since the release of Firefox 54 many, many times all tabs have turned to black. Nothing outside of the Firefox UI can be seen and and restarting browser has been necessary. The change is ...
4
votes
2answers
9k views

How to open JP2 files just in browser?

When I click JP2 files on this page http://sentinel-s2-l1c.s3-website.eu-central-1.amazonaws.com/#tiles/10/S/DG/2015/12/7/0/ I get file downlowd dialog. Is it possible to view these files just in ...
4
votes
0answers
760 views

Chrome and Firefox Poorly Behaved Under Ubuntu 16.04

I have a recently-provisioned Lenovo with a 500G SSD drive and 16G of memory. It only has a few things on it and nothing else running, but Chromium will only have a couple of tabs open before it ...
4
votes
1answer
843 views

How do I re-enable my unsigned addons in Firefox 48?

I already had xpinstall.signatures.required set to false, but Firefox just disabled a few of my addons anyway. How do I re-enable them? Some appear to be abandoned (though they still work) so I doubt ...
4
votes
0answers
806 views

Firefox 47 Storage dev tool not working. Just me?

Original Question I've just upgraded Firefox to 47. No matter which site I go to, the Storage tab in dev tools always says "No data present for selected host". Can anyone else replicate? Go to this ...
4
votes
0answers
789 views

Inactive Firefox uses too much CPU (10% .. 30%)

On Ubuntu 14.04, I have a Firefox 46 with 30 tabs open. The Firefox window is minimized, I've been working with other programs in the last 3 hours. In top I can see that Firefox still uses between 10% ...
4
votes
1answer
172 views

Firefox search engine keyword reset

I use custom keywords to make a search on different search engines within my location bar. It works great. Except for one search plugin: sometimes, the keyword is simply reset, cleared. I have to set ...
4
votes
0answers
133 views

How to focus addons icons in the toolbar in Firefox via keyboard?

To get to the addons on my Firefox's toolbar, I have to point and click on their icons to open their menus or dialog boxes I want to focus these various add-on's icons that are actually in the ...
4
votes
1answer
2k views

How to set the default encoding to Unicode?

How do I set the default encoding in Firefox/Iceweasel to Unicode (instead of Western)? I'm particularly interested in the default encoding for *.txt files. Firefox/Iceweasel seems to always choose ...
4
votes
2answers
322 views

Why do fonts look better in firefox (waterfox) than they do in notepad++?

If font rendering is handled by the OS for both my web browser (firefox / waterfox), and my text editor (notepad++), why do they look so much worse in the text editor? I see the same subpixel ...
4
votes
1answer
142 views

Shift+Scroll in Firefox goes through history

Most programs allow you to Shift+Scroll to scroll horizontally in a window. Google Chrome does this, my editors do this, most programs do this. Firefox is smart and uses Shift+Scroll to go through ...
4
votes
0answers
1k views

How do I disable HTML5 validation in Firefox?

I'm looking for a setting (about:config) that will turn off browser validation of HTML5 input elements like type="email" and max="5", etc. I'm not looking for a plugin, and the novalidate attribute ...
4
votes
0answers
115 views

Completely Disable onKeyDown/onKeyUp events in FireFox

I am using Firefox 34.0.5. I am sick and tired of websites defining their own key bindings that override the defaults in FireFox - its a craps shoot as to if a particular key binding will work or not....
4
votes
1answer
419 views

Firefox is already running, but not responding

I am using two Icedove (Thunderbird) profiles. I am starting the profiles with following commands: icedove -P "default" %u icedove -P "test" -no-remote --class test %u When I click on a link (URL) ...
4
votes
2answers
408 views

How to use multiple tags in firefox browser URL search

I am using tags to manage my bookmarks in Firefox. Scenario: I have multiple URLs that have been tagged with more than one tag. I want to list all URLs in the URL bar, which have only the mentioned ...
4
votes
0answers
1k views

Firefox 32: Download fails; cannot read from source

I'm running Firefox 32, and am currently unable to download files. This is the error message I get, for every single download: C:\Users\Michael\AppData\Local\Temp\Ch+rOsoW.pdf.part could not be ...
4
votes
1answer
528 views

Old settings for Firefox Sync in Firefox 29

Is there a way to configure Firefox 29 to work with an self-hosted fsyncms-Server by editing e.g. some settings in about:config? I can use my server by installing an older version of Firefox and ...