# Open-source browser extensions

26 open-source browser extensions rated against public privacy criteria.

1. [CanvasBlocker](https://privacyratings.com/browser-extensions/canvasblocker/): B (80/100). Firefox extension that blocks or fakes the output of canvas and other JavaScript APIs that websites use for browser fingerprinting.
2. [Chameleon](https://privacyratings.com/browser-extensions/chameleon/): B (80/100). Browser extension that spoofs the user agent, screen size, time zone, language and other browser properties, and can apply privacy-related Firefox settings to reduce fingerprinting.
3. [ClearURLs](https://privacyratings.com/browser-extensions/clearurls/): B (80/100). Browser extension that removes tracking parameters from URLs and skips tracking redirects using a public rule list.
4. [Consent-O-Matic](https://privacyratings.com/browser-extensions/consent-o-matic/): B (80/100). Browser extension from Aarhus University that detects cookie consent pop-ups from common consent management platforms and fills them in automatically according to the user's preferences.
5. [Cookie AutoDelete](https://privacyratings.com/browser-extensions/cookie-autodelete/): B (80/100). Browser extension that deletes cookies and other site data from closed tabs automatically, keeping data only for sites on a user-defined allow list.
6. [DeArrow](https://privacyratings.com/browser-extensions/dearrow/): B (80/100). Crowdsourced browser extension that replaces YouTube video titles and thumbnails with community-submitted versions to reduce clickbait.
7. [Decentraleyes](https://privacyratings.com/browser-extensions/decentraleyes/): B (80/100). Browser extension that serves common JavaScript libraries from local copies instead of third-party content delivery networks, reducing tracking by those CDNs.
8. [Facebook Container](https://privacyratings.com/browser-extensions/facebook-container/): B (80/100). Firefox extension from Mozilla that isolates Facebook, Instagram and Messenger in a separate container so that Facebook cannot easily link activity on other websites to the user's account.
9. [Firefox Multi-Account Containers](https://privacyratings.com/browser-extensions/firefox-multi-account-containers/): B (80/100). Mozilla add-on for Firefox that separates sites into color-coded container tabs with isolated cookies and storage.
10. [I Still Don't Care About Cookies](https://privacyratings.com/browser-extensions/i-still-dont-care-about-cookies/): B (80/100). Community-maintained fork of I Don't Care About Cookies, a browser extension that hides or dismisses cookie consent banners on websites.
11. [JShelter](https://privacyratings.com/browser-extensions/jshelter/): B (80/100). Browser extension that limits what JavaScript on web pages can access, such as precise geolocation, timing and fingerprinting-prone APIs, and warns about sites that try to fingerprint the browser.
12. [LibRedirect](https://privacyratings.com/browser-extensions/libredirect/): B (80/100). Browser extension that redirects sites such as YouTube, Reddit and Twitter to alternative frontends.
13. [Linguist](https://privacyratings.com/browser-extensions/linguist/): B (80/100). Browser extension for translating web pages and text, with an offline translator and support for custom or self-hosted translation services.
14. [LocalCDN](https://privacyratings.com/browser-extensions/localcdn/): B (80/100). Browser extension that emulates common web frameworks such as jQuery and Bootstrap from local copies, blocking requests to third-party CDNs.
15. [NoScript](https://privacyratings.com/browser-extensions/noscript/): B (80/100). Browser extension for Firefox and Chromium-based browsers that blocks JavaScript and other active content except on sites the user allows, with added protection against cross-site scripting and clickjacking.
16. [Privacy Badger](https://privacyratings.com/browser-extensions/privacy-badger/): B (80/100). Browser extension from the Electronic Frontier Foundation that learns to block invisible third-party trackers based on their behavior and sends Global Privacy Control signals.
17. [Privacy-Oriented Origin Policy](https://privacyratings.com/browser-extensions/privacy-oriented-origin-policy/): B (80/100). Firefox extension that strips Origin headers from cross-origin requests where they are least likely to be needed, to limit information sent to third parties.
18. [PrivacySpy](https://privacyratings.com/browser-extensions/privacyspy/): B (80/100). Companion extension for PrivacySpy, an open project that rates and annotates privacy policies; it shows the PrivacySpy score for the current website.
19. [Skip Redirect](https://privacyratings.com/browser-extensions/skip-redirect/): B (80/100). Browser extension that detects intermediary redirect pages, extracts the final URL and goes there directly.
20. [Terms of Service; Didn't Read](https://privacyratings.com/browser-extensions/tosdr/): B (80/100). Browser extension from the ToS;DR project that shows grades and summaries of a website's terms of service and privacy policy, written and reviewed by volunteer contributors.
21. [Web Archives](https://privacyratings.com/browser-extensions/web-archives/): B (80/100). Browser extension that looks up archived and cached copies of the current page on services such as the Wayback Machine and Archive.today.
22. [WebRTC-Leak-Prevent](https://privacyratings.com/browser-extensions/webrtc-leak-prevent/): B (80/100). Chromium extension that changes WebRTC privacy settings to stop WebRTC from exposing local and public IP addresses.
23. [SponsorBlock](https://privacyratings.com/browser-extensions/sponsorblock/): C (65/100). Crowdsourced browser extension that skips sponsored segments and other unwanted parts of YouTube videos using community-submitted timestamps.
24. [AmIUnique Timeline](https://privacyratings.com/browser-extensions/amiunique-timeline/): D (50/100). Research extension from the AmIUnique project that periodically records the browser's fingerprint so users can see how it changes over time.
25. [Privacy Essentials](https://privacyratings.com/browser-extensions/privacy-essentials/): D (40/100). DuckDuckGo browser extension that blocks trackers, upgrades connections to HTTPS and sets DuckDuckGo as the search engine.
26. [Canvas Fingerprint Blocker](https://privacyratings.com/browser-extensions/canvas-fingerprint-blocker/): F (30/100). Browser extension that adds noise to HTML5 canvas output to resist canvas fingerprinting without disabling the canvas element.

Source: https://privacyratings.com/open-source/browser-extensions/