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Questions tagged [firefox]

A free and open source web browser created by Mozilla.

40
votes
4answers
36k views

Debugging high (near total) CPU/memory usage of “Web Content” application on Linux Mint

I have Linux Mint installed on 3 computers at home, and all of them are almost unusably slow whenever Firefox is open. Here is the output from top: As you can see, "Web Content" and Firefox are ...
39
votes
5answers
28k views

Why is Firefox so slow over SSH?

I try to launch Firefox over SSH, using ssh -X user@hostname and then firefox -no-remote but it's very very slow. How can I fix this? Is it a connection problem?
30
votes
6answers
33k views

How to set window size and location of an application on screen via command line?

I want Firefox window to be opened in a specific size, and location on screen using a shell command, for example: firefox myfile.html size 800x600 location bottom-left Is there such a command?
30
votes
3answers
13k views

Command for forcing a pointer ungrab (captured mouse release)

Sometimes Firefox doesn't release the mouse after dragging, so I need to kill the application to force it to release its pointer grab. Is there any command to force an application to ungrab the ...
29
votes
8answers
11k views

how to make firefox read stdin

echo '<h1>hello, world</h1>' | firefox cat index.html | firefox These commands don't work. If firefox can read stdin, I can send html to firefox via pipe. Is it possible to make firefox ...
27
votes
5answers
54k views

What is the difference between Iceweasel and Firefox?

I used Mozilla Firefox in Windows, and now I'm using Iceweasel in Debian 6. Is there any difference to the two programs? What are the advantages and disadvantages to each program? Which one seems ...
27
votes
4answers
29k views

Refresh/reload active browser tab from command line?

I'm trying to set up a custom toolchain where the browser (Firefox or, preferrably, Chrome) is often/frequently/constantly forced to refresh from the commandline. (The idea is to instantly see the ...
23
votes
7answers
120k views

Fix “firefox is already running” issue in Linux

I am trying to open Firefox in CentOS, but I'm getting the following message: Firefox is already running but is not responding and Firefox doesn't open. I tried this in command line: kill ...
22
votes
2answers
16k views

Starting firefox on a remote host (over ssh) opens a new window locally: what is happening?

I have never noticed this behaviour before, and am a little confused as to what is happening. I have a local copy of firefox running, then ssh (ssh -X <url>) into a remote server and start a ...
20
votes
3answers
12k views

Flash plugin up to date but Firefox keeps telling me that I have the old version

According to my browser (Firefox 34.0) the installed version of the Shockwave Flash plugin appears to be 11.2.202.424. This version is considered to be insecure: https://helpx.adobe.com/security/...
19
votes
4answers
7k views

How to decompress jsonlz4 files (Firefox bookmark backups) using the command line?

There seems to be various JavaScript+browser specific ways of decompressing this, but isn't there some way to transform jsonlz4 files to something unlz4 will read?
17
votes
3answers
16k views

How Can I Improve the Font Rendering In Firefox

My font rendering in Firefox looks terrible on pages such as facebook.com and twitter.com: I'm running Debian 8 and fiddling with hardware acceleration, and it doesn't seem to work.
14
votes
5answers
27k views

How can I run Firefox on Linux headlessly (i.e. without requiring libgtk-x11-2.0.so.0)?

I’ve got Dreamhost shared hosting, and I’m trying to run Firefox 3.0 on it headlessly for use with Selenium. When I try to run it (~/local/bin/firefox/firefox), I get the following error message: ...
13
votes
1answer
844 views

apt package manager on Debian lists a package as upgradable but does not upgrade

This issue is similar to Debian Linux not updating package, but in my case the newer package is not from backports: § apt list --upgradable Listing... Done firefox-esr-l10n-en-gb/stable 60.2.0esr-1~...
13
votes
1answer
9k views

How to prevent the auto creation of the “Desktop” folder? [duplicate]

Possible Duplicate: Which application should I blame for compulsively creating a directory again and again? When I upload files via Firefox, the Open File dialog appears and the Desktop folder is ...
13
votes
3answers
5k views

How to tell Firefox to use another ALSA device?

I have an onboard sound card, and also a connected bluetooth headset. I have configured the bluetooth device in /etc/asound.conf: # cat /etc/asound.conf pcm.bluetooth { type bluetooth device ...
13
votes
2answers
26k views

Where can I find firefox log file?

Where can I find firefox log file on Centos 6? Unfortunately, firefox doesn't write its log in /var/log/message .
13
votes
1answer
2k views

Make Firefox use xdg-open for opening files

Is there any way to force Firefox to use system-wide defaults, i.e. xdg-open for opening all types of files?
12
votes
8answers
45k views

Install Firefox Quantum in debian 9 Stretch

I looking where can I install and try the new browser Firefox Quantum, I didn't find how to get it. Can someone please tell me what repositories or links to download and install it ? Thank you.
12
votes
5answers
3k views

How to set fallback encoding to UTF-8 in Firefox?

I've written a Norwegian markdown document: $ file brukerveiledning.md brukerveiledning.md: UTF-8 Unicode text I've converted it to HTML using the markdown command: $ markdown > brukerveiledning....
12
votes
2answers
6k views

is there a way to get the url from current tab in google-chrome?

I used to do that on firefox using a python command, but recently something changed and I can't get the URL anymore! What used to work with firefox: #!/bin/bash current_tab_num () { python2 <&...
11
votes
2answers
2k views

Running Firefox in an Ubuntu VM over SSH opens host machine's Firefox

I'm using Slackware. Firefox is running. I also have a virtual machine running Ubuntu 16.04 using VirtualBox. I've installed Firefox on the virtual machine, and Firefox is installed on the host ...
11
votes
2answers
5k views

Where does firefox get the “default” applications for opening files from?

By default, the Firefox (33.0) on my FreeBSD 11.0-CURRENT has the default application for opening PDF files set to Inkscape. Firefox does remember my previous choice, evince, in the “What should ...
11
votes
2answers
711 views

How to make Firefox honour my configuration to disable font hinting for a single font?

I am using Debian GNU/Linux version 8 with LXDE. Regarding fonts, I have my system configured to use anti‐aliasing, subpixel rendering, and full hinting. However, I want to disable hinting for ...
10
votes
5answers
3k views

saving in /tmp is not really saving?

Open e.g. a mail attachment from Firefox (without previously saving it); this is a Libre Office document, you edit it, and then push save (not save as) and close both text editor and browser. Then the ...
10
votes
3answers
22k views

Where does Firefox store its cookies on Linux?

Where does Firefox store cookies in Linux? I searched everywhere but did not find anything.
9
votes
1answer
8k views

Xvfb or Firefox throwing errors & gratuitously logging

per the answer to this question, I'm running Xvfb to make a virtual display so firefox will run on my CentOS server. (I don't need to see firefox or do any actual key or screen input/output with ...
9
votes
1answer
655 views

Map a symbol to a specific key

I have the following problem: I use the intl variant of gb keyboard layout, i.e., what you get with: setxkbmap -layout gb -variant intl I use gmail in Firefox, and for some reason, the gmail ...
9
votes
1answer
824 views

How to force applications to not start maximised in Awesome WM?

How to reproduce: ssh -X user@host firefox (or some other X application). Maximise the window. Close the application. Open the application in Awesome WM (tried only locally, but should also work ...
9
votes
1answer
3k views

Why does Stackoverflow in Iceweasel cause high CPU usage for Xorg?

If I go to the front page of this site, and hit page down/page up repeatedly, it's pretty quick, and firefox-bin (iceweasel) uses maybe 50% CPU, Xorg uses maybe 40%. If I go to Stackoverflow's main ...
8
votes
7answers
2k views

Is there a way to store Firefox passwords in a local encrypted database in Linux?

I want Firefox to "remember" my passwords so I don't have to type them in; unfortunately, the built-in password manager stores them in plain text, which is too high a security risk. I'd like to find a ...
8
votes
1answer
2k views

Why does this curl command from firefox not download anything?

I opened https://raw.githubusercontent.com/andreafrancia/trash-cli/master/README.rst in Firefox, and copy the following curl command from Tools->Web Developer->Network: curl 'https://raw....
8
votes
3answers
38k views

Portable Firefox Linux

I've installed latest firefox linux-x86_64 from ftp.mozilla.com on a usb device and created a new profile file with the -P command. Unfortunately, the application does not recognize the flash plugin ...
8
votes
5answers
27k views

How to change Firefox icon shown on panel and menus?

I installed Firefox on Linux Mint Debian Edition with the Cinnamon desktop. This Firefox package doesn't use the regular Firefox icon, with the fox curled around the world ; it has what I call the "...
8
votes
1answer
3k views

Printing webpage using browser via CLI

I want to automate printing. From URL in text file, the webpage is printed. I have tried using wget and the results are very inferior than when printed via browser. Somehow FF and Chromium both manage ...
8
votes
1answer
1k views

restore chromium/firefox windows to original workspace/desktop

I have a three monitor setup, with two monitors driven directly by Ubuntu 12.04 for a total workspace/desktop area of 3840x1200¹. I usually work with 5 virtual workspaces, often more if I work on ...
8
votes
2answers
7k views

How to set downloaded Firefox to default web browser in Debian?

How do I set a manually downloaded Firefox as my default web browser so that clicking a link in another application will open the link in this Firefox? I tried these commands, but they didn't seem to ...
8
votes
1answer
1k views

How to make Firefox open mailto: links with mutt in terminal

All I want to do is pass mailto: links to urxvt -e mutt -F ~/path/to/muttrc with the rest of the mailto: URL appended. I've tried every script I can find online that purports to do this, from simple: ...
7
votes
4answers
140k views

Opening Firefox from terminal [duplicate]

When I type firefox in terminal, it starts Firefox but the terminal "hangs". What is happening behind the scenes? Can I open Firefox from terminal and keep on using the same terminal tab for other ...
7
votes
2answers
3k views

How to prevent Firefox from updating to version 57 on Ubuntu 16.04?

FF 57 will break legacy extensions. I have several of these which I want to keep working. For this, I want to prevent FF from auto-updating. However, although previously you had the option of doing ...
7
votes
5answers
1k views

How to measure Firefox's startup time?

I would like to measure how much time it takes for some softwares to start. I know the command time but in the case of firefox (iceweasel for me on Debian), this command prints only the time I let ...
7
votes
1answer
4k views

How can I get Japanese characters to show properly in Firefox on Arch?

I am running Firefox 52.0.2 on Arch Linux and although on the system (e.g.: in Nautilus) I have Japanese characters showing fine, in Firefox they are unreadable because all that is shown for them is ...
7
votes
2answers
29k views

Launch a GUI browser on server without a GUI? [duplicate]

What's a simple way to launch a browser on an server that doesn't have a GUI, but needs a GUI-like browser? Something like Firefox or Chrome. I need to trigger a page load but it needs full javascript ...
7
votes
1answer
6k views

Are Icecat and Iceweasel different projects?

I was interested in finding Firefox 'clones' in Linux when I heard about Icecat and Iceweasel. But while Icecat can be installed with sudo add-apt-repository ppa:gnuzilla-team/ppa && sudo ...
7
votes
4answers
8k views

Force Firefox to remember passwords on particular sites

Usually, when I log into a website with username and password, Firefox asks whether it should remember the login details. When I click yes, next time I visit the website, the username and password ...
7
votes
4answers
21k views

Error when executing headless firefox through Selenium

I am trying to execute headless firefox on the remote machine(running Ubuntu 16.04) through Selenium via SSH. However, this gives me a "Error: GDK_BACKEND does not match available displays" error. My ...
7
votes
1answer
1k views

Playing MP3 in Firefox on Debian

Is there a way to get MP3 playback within Firefox 31+ without installing plugins? I know about the entire encoding issues, but I have read somewhere that Firefox will look for native OS encoders like ...
7
votes
2answers
783 views

How do I open external links in different profiles with Firefox?

I have two instances of firefox running under separate profiles: $ firefox -P default & ... $ firefox -no-remote -P second & Now I can open a new tab from the command line with: $ firefox -...
7
votes
1answer
3k views

How to tell Chromium-browser to run a url as single instance not multiple instances?

I have a web application which crawls data and any browser download it first the second one will not get that crawl informations. While using Chromium-browser in a PC i start as below: $ chromium-...
7
votes
2answers
794 views

Firefox unable to access domains defined in /etc/hosts if Network Manager is disconnected from a network

For developing web sites, I define test domains in /etc/hosts : 127.0.0.1 example.org I can then access example.org in the browsers. However I when the Network Manager is not connected to any ...