Privacy extensions can dramatically reduce online tracking — but there are dozens of them and their descriptions often overlap. Here is a practical breakdown of the best options and what each one actually does.
1. uBlock Origin
Blocks ads, trackers, malware domains, and cryptominers using community-maintained filter lists. Open source, lightweight, and does not sell ad exceptions. Install this first — it is essential for Chrome, Firefox, and Edge.
2. Privacy Badger (EFF)
Learns to block invisible trackers based on behavior rather than a blocklist. If a third-party domain tracks you across multiple sites without legitimate purpose, Privacy Badger blocks it automatically. Pairs well with uBlock Origin.
3. Cookie AutoDelete
Automatically deletes cookies from websites you have closed. Whitelist sites where you want to stay logged in. Prevents long-term cookie tracking without manually clearing cookies after every session.
4. Canvas Blocker and JShelter
Blocks or randomizes canvas fingerprinting — one of the most common browser tracking techniques. Also handles WebGL and AudioContext fingerprinting APIs. Available as Canvas Blocker on Firefox and JShelter on Chrome.
5. Bitwarden
A free, open-source password manager that generates strong unique passwords for every site. Using unique passwords per site is the single most impactful security step you can take. Available on Chrome, Firefox, Edge, and Safari.
The Anonymiz Extension
The Anonymiz browser plugin adds one-click referrer stripping. When you share a link, it removes the HTTP referrer header so the destination site cannot see where you came from. Available for Chrome and Firefox.
Recommended Setup
For most users: uBlock Origin (essential), Bitwarden (essential), Cookie AutoDelete (recommended), Privacy Badger (optional), and the Anonymiz Extension for link sharing privacy.
