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PrivaBlock is an open-source privacy extension for Firefox that blocks unwanted ads and trackers while providing fingerprinting protection and user-controlled filtering.

• Ad and tracker blocking
• Cosmetic filtering
• Fingerprinting protection
• Light, Balanced, and Strict filtering profiles
• Per-site protection controls
• Custom filters and custom filter lists
• Built-in network request logger
• Per-page and daily blocking statistics
• Filter-list management and caching
• Privacy-focused local configuration

PrivaBlock supports compatible filtering rules used by widely adopted content-blocking lists. Depending on the selected configuration, users can enable lists such as EasyList, EasyPrivacy, AdGuard lists, HaGeZi lists, and other compatible sources.


PrivaBlock does not require an account and does not include advertising, analytics, or user profiling.

Extension settings, statistics, and logger data are stored locally in Firefox.

Third-party filter lists may be downloaded directly from their configured providers. PrivaBlock does not operate an analytics or user-tracking service.

For more information, see the project's Privacy Policy and source code on GitHub.