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Extensions

Security/Privacy

uMatrix filters net requests. Development has ended.

uBlock_o is a general-purpose blocker.

CanvasBlocker blocks canvas-API to prevent canvas fingerprinting.

ClearURLs removes tracking elements from URLs. Source

CSS Exfil Protection sanitizes and blocks any CSS rules which may be designed to steal data. Source

LocalCDN emulates remote frameworks (e.g. jQuery, Bootstrap, AngularJS) and delivers them as local resource. Source

Privacy Possum wrenches common commercial tracking methods by reducing and falsifying the data gathered by tracking companies. Source

Misc

Bookmark Dupes displays/removes duplicate bookmarks. Source

Selective Bookmarks Export Tool exports selected bookmarks. Source

Feedbro is advanced feed reader (RSS, Atom, RDF) with built-in social media plugin support (Youtube, Facebook, Twitter, Instagram and etc.).

Print Edit WE helps to choose the contents of a web page prior to printing.

Translate Web Pages translates whole page using Google or Yandex or selected text using Google, Yandex, Bing or DeepL. Source

Development

HTML Validator validates HTML pages.

Markdown Viewer Webext is Markdown (.md) file viewer. Source, Note for Linux users

Info

Extensions - arkenfox Wiki

Configuration

The large number of browser settings can be configured via user.js. For the desktops, create your user.js somewhere and drop it into your Profile directory. The apply user.js in unrooted Android is more difficult (see, arkenfox Wiki).

Comprehensive user.js template for configuring and hardening Firefox - arkenfox

Firefox Configuration Guide for Privacy Freaks and Performance Buffs - 12bytes.org

Descriptions of some Firefox settings - DonQuixoteI

Privacy-Handbuch - privacy-handbuch.de (in German)

Firefox Tuning zur Absicherung und Anonymisierung - kairaven.de (in German)

A brief guide to Mozilla preferences - MDN

Bugzilla/Release/Source

Bugzilla

Firefox Releases for Desktop

Release Calendar

Searchfox is a source code indexing tool for Mozilla Firefox

Nightly Firefox source code search tool (DXR)

Forums

mozillaZine Forums

Firefox Builds - mozillaZine Forums

Alternatives

• Chromium

• Palemoon