uBlock Origin
Privacy & SecurityFree
Efficient, open-source content and ad blocker.
4.735,500 reviews11M+
View Extension3 extensions
Best Privacy & Security Chrome Extensions
Privacy extensions block trackers, strip ads and keep credentials out of reach of malicious pages.
All Privacy & Security extensions
Bitwarden
Privacy & SecurityFreemium
Open-source password manager with autofill.
4.38,000 reviews7M+
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Privacy Badger
Privacy & SecurityFree
Learns and blocks invisible trackers automatically.
4.52,000 reviews1M+
View ExtensionRelated categories
Privacy & Security comparisons
Side-by-side pages for the pairs people compare most in this category.
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 comparisonsEvery head-to-head comparison, grouped by category.
Shortlists and alternatives
Best Productivity Chrome ExtensionsTen productivity Chrome extensions worth installing, with live Chrome Web Store ratings and install counts, honest trade-offs and a permissions checklist.Best AI Chrome ExtensionsThe AI Chrome extensions worth a permission grant, grouped by the job they do: answering, summarising, writing and archiving. Live store ratings and honest limits.Best SEO Chrome ExtensionsSeven SEO Chrome extensions that answer a question faster than a dashboard: on-page audits, keyword overlays and competitor stacks, with accuracy caveats.uBlock Origin alternativesClosest replacements for uBlock Origin.Privacy Badger alternativesClosest replacements for Privacy Badger.Bitwarden alternativesClosest replacements for Bitwarden.
Frequently asked questions
What is the best privacy & security Chrome extension?
uBlock Origin currently leads this category on rating and review volume, but the right choice depends on whether you need privacy & security features for personal or team use.
Are there free privacy & security extensions?
Yes — 2 of the 3 extensions in this category are free, and several more offer a usable free tier.
How are these extensions ranked?
By install base and rating, with editorial notes on trade-offs.