Redundant Extensions

The arkenfox user.js wiki discusses browser extensions and recommends keeping them to a minimum because they have privileged browser access.

github.com/arkenfox/user.js/wiki/4.1-Extensions
Redundant Extensions homepage screenshot

About Redundant Extensions

This wiki page from the arkenfox user.js project provides guidance on Firefox privacy and security extensions. It advises keeping extensions to a minimum and organizes them into recommended, optional, tools, and "don't bother" groups.

Recommended entries include uBlock Origin with blocking-mode and filter-list setup and Skip Redirect. Optional entries include Header Editor and container extensions. It describes many other extensions as redundant with built-in protections such as Total Cookie Protection, HTTPS-Only Mode, or uBlock Origin, and notes that Temporary Containers and Redirector are no longer maintained.

Key features

  • Setup guidance for uBlock Origin blocking modes and filter lists
  • Instructions to enable AdGuard URL Tracking Protection
  • Header Editor rules to modify, cancel, or redirect requests
  • Multi-Account Containers for isolation and multiple account sign-in
  • Tool to compare user.js files and show detailed differences
  • List of extensions described as redundant with built-in protections
Best for: Firefox users following the arkenfox user.js setup who need help choosing extensions.
Good for
  • Separates extensions into recommended, optional, tools, and don't-bother groups
  • Explains built-in Firefox alternatives for many common extensions
  • Flags unmaintained extensions and fingerprinting risks of adding extensions
Watch out for
  • Covers privacy and security-related extensions only
  • Notes Temporary Containers and Redirector are no longer maintained
  • States extensions have privileged access and can weaken site isolation

Redundant Extensions at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Platforms
Browser extension
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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Redundant Extensions FAQ

Why does the page recommend using few extensions?
Because extensions have privileged browser access, require trust in the developer, can make users stand out, and can weaken site isolation.
What does the page say about NoScript, Ghostery, Privacy Badger, and similar extensions?
It describes them as redundant with uBlock Origin for content blocking or with Total Cookie Protection for third-party isolation.
What does the page say about cookie-cleaning extensions?
It says in-session sanitizing does nothing for IP tracking, and a new ID requires both full sanitizing and a new IP.
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