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Peafox

🔥🦊 A Firefox user.js for the optimal balance between privacy, security and compatibility.

Contents

Features

Key Features

  • Disabled Mozilla telemetry
    • Default browser agent and default browser check are both off by default.
    • Users are opted out of Mozilla Studies and Experiments.
    • Data reporting and pings are disabled.
  • Removed reliance on Google services
    • This includes disabling Safe Browsing
    • Uses Mozilla Location Services as geolocation provider instead of Google
  • DNS-over-HTTPS is enabled by default (Firefox has begun adoption)
  • New Tab Page URL can be changed without extensions.

Enhancing Features

General

  • Pocket integration is disabled.
    • New Tab Page will not show Pocket stories either.
  • Snippets and sponsored content is disabled.
  • Downloads won't be saved to the Downloads directory automatically, users can choose where to save them.
  • Cosmetic animations are turned off to improve performance.
  • Recommended Extensions and Themes are disabled
  • User agent can be changed in devtools

Network

  • DNS and DNS provider changes (see above).
  • Encrypted SNI is enabled
  • HTTP/3 Support is enabled
  • All predictors and prefetching is turned off.
  • Third party cookies are blocked, first party cookies are allowed.
  • Tightened Referrer header policy to stop tracking.
    • Referrer is only sent when full hostnames match.
    • Referrer will only contain scheme, host and port.
  • Non-unicode domains are converted to Unicode to stop phishing
  • HTTPS-only mode is enabled so no need for HTTPS Everywhere

Geolocation

  • Geolocation provider is set from Google to Mozilla.
  • Geo-specific search defaults are disabled.
  • Disable using the OS's geolocation service.

Privacy

  • Navigator values (buildID, platform, oscpu and appversion) are overridden to better protect against fingerprinting.
  • Tracking elements are removed from URLs recommended by the browser.
  • Onboarding and beacon are disabled.
  • URLs are never trimmed and will always show the protocol.
  • Crash reporting (breakpad) is disabled.
  • Battery Status API which only serves as a fingerprintable detail, is disabeld.
  • The "speculativeConnect" feature of the URL bar is disabled.
  • Tracking Protection is set to strict.
    • Resists fingerprinting.
  • URL bar suggestions of any kind are disabled.
  • Autofill for forms, addresses and credit cards is disabled.
  • Video statistics and Widevine (proprietary software by Google) are disabled.

Installation

  1. Simply download user.js.
  2. Visit about:support in Firefox to see your profile directory.
  3. Copy user.js into your profile folder.

Credits

BTC: bc1q72l5jtjcxlma8knwt80nwm5c9wccu45tt7y02g