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Google Analytics Opt-out Browser Add-on vs AdGuard Browser Extension: catalog facts
Google Analytics Opt-out Browser Add-on	AdGuard Browser Extension
Free Free to download and install from Google.	Free The browser extension is free to install.
Browser extension	Browser extension
Official opt-out mechanism provided by Google itself Available for Chrome, Firefox, Safari and Edge	Blocks ads, pop-ups and trackers Cosmetic filtering hides leftover page elements
Only affects Google Analytics, not other trackers Only works with the supported analytics.js and gtag.js versions	Only filters inside the browser, not other apps System-wide filtering requires AdGuard's separate apps
Browser extension	Browser extension
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.