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Best Privacy and Security Chrome Extensions (2026)

Privacy on Chrome means blocking trackers, hiding your data and securing credentials. These extensions do it without breaking the web.

Short answer

uBlock Origin blocks ads and trackers with the least memory. Privacy Badger learns trackers automatically, and Bitwarden protects your passwords.

How we picked

  • • Request-level blocking
  • • Open source or audited
  • • Minimal permissions
  • • No data selling
  • • Active maintenance

At a glance

#ExtensionBest forRatingUsersPricing
1uBlock OriginBest blocker4.711M+
Free
2Privacy BadgerAutomatic tracking protection4.51M+
Free
3BitwardenBest password vault4.37M+
Freemium
4GhosteryTracker transparency4.72M+
Freemium
5AdGuard AdBlockerFull privacy suite4.716M+
Free

Ratings and install counts are synced daily from each extension's Chrome Web Store listing.

  1. uBlock Origin Chrome extension logo

    1. uBlock Origin

    Blocks ads, trackers and malware domains with tiny memory use.

    Best for: Best blocker

    4.7~11M+ users
    Free
    View ExtensionAlternativesStore
  2. Privacy Badger Chrome extension logo

    2. Privacy Badger

    Learns trackers on its own and blocks them with no setup.

    Best for: Automatic tracking protection

    4.5~1M+ users
    Free
    View ExtensionAlternativesStore
  3. Bitwarden Chrome extension logo

    3. Bitwarden

    Open-source password manager with unlimited free passwords.

    Best for: Best password vault

    4.3~7M+ users
    Freemium
    View ExtensionAlternativesStore
  4. Ghostery Chrome extension logo

    4. Ghostery

    Shows exactly which trackers follow you and blocks them.

    Best for: Tracker transparency

    4.7~2M+ users
    Freemium
    View ExtensionAlternativesStore
  5. AdGuard AdBlocker Chrome extension logo

    5. AdGuard AdBlocker

    Ad blocking, stealth mode and phishing protection in one.

    Best for: Full privacy suite

    4.7~16M+ users
    Free
    View ExtensionAlternativesStore

What to know before choosing

One strong blocker beats three weak ones — stacking blockers breaks pages without adding protection.

A password manager is the single highest-impact privacy upgrade you can make.

Compare the shortlist head-to-head

Narrowed it to two? These side-by-side comparisons settle it with a feature table and a verdict.

uBlock Origin vs Privacy BadgerFilter-list ad blocking against heuristic tracker blocking that learns as you browse.Bitwarden vs Dark Reader permissionsA permissions case study: what a password manager needs versus what a styling extension needs.uBlock Origin vs BitwardenBoth are privacy & security extensions people shortlist together for privacy — see how ratings, install base, pricing and day-to-day use differ.Bitwarden vs Privacy BadgerBoth are privacy & security extensions people shortlist together for privacy — see how ratings, install base, pricing and day-to-day use differ.All comparisonsThe full compare hub, grouped by category.

Alternatives to the top picks

uBlock Origin alternativesClosest replacements for uBlock Origin, ranked by fit.Privacy Badger alternativesClosest replacements for Privacy Badger, ranked by fit.Bitwarden alternativesClosest replacements for Bitwarden, ranked by fit.Ghostery alternativesClosest replacements for Ghostery, ranked by fit.AdGuard AdBlocker alternativesClosest replacements for AdGuard AdBlocker, ranked by fit.

Frequently asked questions

What is the most private Chrome extension?

uBlock Origin and Privacy Badger are open source with no data collection.