• Firefox Scripts
  • about:config
  • userChrome.css
  • userChrome.js
  • user.js
  • themes
  • tutorials and documentations
  • extensions
    • general
    • ui
    • dev
    • privacy & security
    • extension development
    • bookmarks
    • tabs
    • search engines
    • rss
    • other

• r/firefox/wiki/aboutconfig - Advanced settings tweaking subreddit

• about:config entries - reference to the entries in about:config

• Privacy Related Tweaks - Collection of privacy-related tweaks thats shows you how to enhance the privacy of browser

• overview of about:config - security and privacy preferences

• mozillazine.org - Security and privacy-related preferences.

• r/firefox/wiki/userchrome - Customizing the Firefox UI with CSS

• Aris-t2/CustomCSSforFx - custom CSS tweaks for Firefox Quantum

• Classic CSS tweaks - A lot of excellent information regarding userChrome.css

• Timvde/UserChrome-Tweaks - a community maintained repository of userChrome.css tweaks

• stonecrusher/simpleMenuWizard - Hide contextmenu items in Firefox

• Photon Design System - Guidelines, reusable UI components, templates, and other resources.

  • Firefox Colors Pallete
  • Icons Library

• Endor8/userChrome.js - Scripts for the Firefox extension userChrome.js

• xiaoxiaoflood/firefox-scripts - userChromeJS / autoconfig.js and extensions

• Aris-t2/CustomJSforFx - custom scripts

• dupontjoy/userChrome.js-Collections - UC scripts collections

• ghacksuserjs/ghacks-user.js - an ongoing comprehensive user.js template for configuring and hardening Firefox privacy, security and anti-fingerprinting

• pyllyukko/user.js - This is a user.js configuration file to harden Firefox's settings and make it more secure

• gocom/pinceau - Personal Firefox userChrome and preference customizations

• user.js - configuration file for Firefox designed to harden browser settings and make it more secure

• theme docs - manifest.json

• Firefox Color - Build Beautiful Firefox Themes

• muckSponge/MaterialFox - A Material Design-inspired userChrome.css theme for Firefox

• Quantum-Nox-Firefox-Dark-Full-Theme - these usercontent and userchrome files will give a full themed dark color to Firefox Quantum, menus and dialogs included, as well as the scrollbars

• firefox-sweet-theme - A dark and modern theme for firefox with vibrant colors

• overdodactyl/ShadowFox - a universal dark theme for Firefox

• FOXSCAPEuC by Michael Walden - a full featured retro theme for Firefox that makes Firefox look like Netscape 4.x, Netscape 6+ "Classic" theme

• Add-ons server - Add-ons API documentation

• Source Tree Docs - Mozilla Source Tree Docs 69.0a1 documentation

• Are We XBL Still? - site contains tools for understanding and working with XBL code in Firefox to make it easier to replace

• Searchfox - Searchfox is a source code indexing tool for Mozilla Firefox.

• firefox-source-docs - Mozilla Source Tree Docs 69.0a1 documentation

• userchrome.org - userChrome.css for Customizing Firefox

• MozillaZine Knowledge Base - userChrome.css

• File I/O | MDN - a full listing of directory tokens

• Surfingkeys - Map your keys for web surfing, expand your browser with javascript and keyboard

• Tampermonkey - Tampermonkey is the world's most popular userscript manager

• Simple Translate - Quickly translate selected text on web page

  settings

  Web page

  key	value
  Automatically switch to the second language	true

  General

  key	value
  Target language	russian
  Secong language	english
  Show translation candidates	false

  Translation button

  key	value
  Display position - Direction	Bottom
  Display position - Offset	20

  Translation panel

  key	value
  Width	480px
  Height	320px
  Font size	14px
  Display position - Reference point	Clicked Point
  Display position - Direction	Bottom
  Display position - Offset	20
  Font color of translation result	#bdbdbd rgb(189, 189, 189)
  Font color of translation candidates	#e3ded5 rgb(227, 222, 213)
  Background-color	#333333 rgb(51, 51, 51)

  Preview

  

  ---

• Adguard AdBlocker - Unmatched adblock extension against advertising and pop-ups

• Stylus - Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets

• Dark Reader - Dark mode for every website

• DmitriK/darkContrast - Fixes low contrast text when using dark desktop theme

• CodeCopy - Because copy to clipboard buttons should exist on every code snippet

• Module Linker - Add direct links to imported modules on GitHub source code

• npm-hub - Explore npm dependencies on GitHub repos

• Refined GitHub - Simplifies the GitHub interface and adds many useful features

• EnixCoda/Gitako - File tree extension for GitHub

• Gitpod - One-Click Online IDE for GitHub

• github-vscode-icons - vscode-icons for github

• JSON Lite - Fast JSON viewer - highlights, shows items count/size, handles large files

• AWS Console Recorder - Records actions made in the AWS Management Console and outputs the equivalent CLI/SDK commands and CloudFormation/Terraform templates

• Web Developer - adds various web developer tools to the browser

• Wappalyzer - Identify technologies on websites

• User-Agent Switcher - Easily override the browser's User-Agent string

• 1Password X - The best way to experience 1Password in your browser

• AdGuard VPN - Makes the Internet open and your data safe. Topnotch VPN from the creators of famous ad blocker.

• BitWarden - A secure password manager for all of your devices.

• Privacy Settings - Alter built-in privacy settings easily with a toolbar panel.

• EmailThis/extension-boilerplate - A template for building cross browser extensions for Chrome, Opera & Firefox

• Extension source viewer - View source code of Firefox add-ons and Chrome extensions (crx/nex/xpi) from addons.mozilla.org, the Chrome Webstore and elsewhere

• Chrome Store Foxified - Enables the Google Chrome Store and Opera Addons Website for Firefox. Point and click to install Opera/Chrome extensions straight into firefox

• Bookmarklets context menu - Add a context menu item contains only bookmarklets from bookmarks.

• Bookmark Dupes - Display/Remove duplicate bookmarks, empty folders or descriptions

• Bookmarks Organizer - Put order in your bookmarks, find no longer working bookmarks, redirects, duplicates and more

• Checkmarks - Check bookmarks and reload favicons

• Raindrop.io - Keep your favorites handy

• Auto Tab Discard - Use native tab discard method to automatically reduce memory usage of inactive tabs

  settings

  Discarding options

  key	value
  discard after	600ms
  when number of tabs exceeds	3
  display in context menu	false
  do not discard when offline	true
  toolbar click action	discard other tabs

  ---

• Tab Suspender - Native, lightweight and performant open source extension that reduce Firefox's memory usage

• Tab Session Manager - Save and restore the state of windows and tabs

• Multi-Account Containers - Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy

• Focus On Left Tab After Closing - Activate the left tab when a current tab is closed.

= GitHub

= YouTube

• Feed Indicator - Adds an icon to indicate RSS/Atom feeds to address bar and previews a feed

• Feed Preview - Indicates available RSS and Atom feeds and renders previews

• I'm not robot captcha clicker - I'm not robot captcha automatic clicker

• Free Download Manager - Free Download Manager integration with your Firefox browser