user.js file firefox

Please Mozilla, don't touch the user.js functionality in Firefox

A bug report opened about nine months ago on Mozilla's Bugzilla bug tracking site for Firefox suggests that the organization could disable reading the user.js file of the Firefox browser by default […]

firefox 71 about config new

Firefox 71: new about:config interface lands

Mozilla plans to launch the redesigned about:config interface in Firefox 71, the next stable version of the web browser. The internal page about:config provides Firefox users with access to an advanced set […]

firefox add-ons csp issue

Firefox CSP Issue may cause extension conflicts

Mozilla Firefox has an issue right now that is causing conflicts if multiple extensions are installed that modify CSP headers on visited sites. CSP, which stands for Content Security Policy, is a […]

librefox firefox privacy

Librefox: Firefox with privacy enhancements

Librefox is an open source project designed to provide anyone with a copy of the Firefox browser that comes with privacy and security enhancements included. Librefox is not a fork of Firefox […]

tor browser without tor

Can you use the Tor Browser without Tor connection?

Tor Browser is a web browser specifically designed for privacy and anonymity. The web browser is a modified version of Firefox ESR that includes privacy tweaks and even some extensions to improve […]

youtube classic edge

Google making YouTube slower for non-Chromium browsers?

If you use Microsoft Edge or Mozilla Firefox to access YouTube to stream videos, read comments, or interact with the site in other ways, you may have noticed that the site is […]


Study on the effectiveness of fingerprinting countermeasures

Fingerprinting is a common technique used by sites and organizations either on its own or complementary to track and identify Internet users. Fingerprinting uses two core approaches to assign unique identifiers to […]

firefox fingerprint protection

A history of Fingerprinting protection in Firefox

Fingerprinting is a common technique used predominantly by advertising agencies and marketing companies to track people on the Internet. Mozilla introduced the preference privacy.resistFingerprinting in Firefox 41 as part of the Tor […]

private browsing referer stripping firefox 59

Firefox 59: Referer Path Stripping in Private Browsing

Mozilla plans to strip path information from the referer when visiting third-party sites starting in Firefox 59 Stable. The new feature applies to the browser's private browsing mode only. Web browsers provide […]

prefs cleaner

Automation comes to the Ghacks user.js configuration for Firefox

The Ghacks user.js configuration file for Firefox contains a list of mostly privacy and security-related preferences for the web browser. Firefox updates may change preferences. Updates may remove preferences, modify them, or […]

remove etags

A solution to ETAg tracking in Firefox

The ETAg -- entity tag -- is a web cache validation method that web servers use for identifying resources. The core idea behind the feature is to use it to compare resources […]

firefox extensions cookies

How to deal with Firefox extensions that require cookies

Some Firefox extensions require access to local storage and/or indexedDB, for instance to store data on the user device Firefox runs on. These extensions may break if cookies are blocked. Extensions like […]

firefox 56 changes user.js

Firefox 56: new preferences and Ghacks user.js changes

Mozilla released Firefox 56 to the release channel a couple of days ago, and this overview provides you with information on new, updated, and removed changes made to the Ghacks user.js file. […]

firefox 55 prefs changes

Firefox 55: new preferences and Ghacks user.js changes

This guide offers information on changes made to the Firefox 55 preferences, as well as new, deprecated, or removed Ghacks user.js preferences. Mozilla released Firefox 55.0 to the Release channel on August […]

firefox 55 broken legacy addons

Abandoned Firefox add-ons that break can be fixed but not uploaded to AMO

Firefox 55 and the coming Firefox 56 and 57 releases mark an important point in the history of the browser. Mozilla plans to switch off the Firefox legacy add-on system in Firefox […]

firefox system add-ons

Control Firefox System Add-ons with the Ghacks user.js file

Some time ago part of development for Firefox shifted from integrating new features and experiments in the core browser directly to using system add-ons for that. Mozilla did integrated Pocket in Firefox […]

firefox 54 preferences changes

Firefox 54: new preferences and Ghacks user.js changes

This article offers information on changes made to the Firefox 54 preferences, as well as new, deprecated, or removed Ghacks user.js preferences. Mozilla released Firefox 54.0 this week to the Stable channel. […]

site data

Firefox 53: new preferences and Ghacks-user.js changes

The following article provides you with information on new Firefox 53 preferences, deprecated or removed preferences, and changes to the Ghacks-user.js file for the Firefox web browser. Mozilla released Firefox 53 on […]