LibreGuard — LibreSearch

How it works
LibreGuard blocks ads, trackers, and malicious domains at the network layer using Chrome and Firefox's declarativeNetRequest API. Requests are intercepted before they ever leave your browser — no JavaScript injection, no slow per-request processing, no data collection.
At build time, LibreGuard compiles 300,000+ domains from trusted, community-maintained filter lists into efficient static rules that ship with the extension.
Features
- Blocks 300K+ ad, tracking, malware, phishing, and scam domains
- Network-level blocking — faster and more private than script-based blockers
- Per-site allowlist to disable blocking on specific sites
- Toolbar badge shows blocked requests per page
- Custom cosmetic filter support for hiding page elements
- Filter list auto-updates (refresh any list to get latest rules)
- No account, no telemetry, no profile — nothing leaves your device
Filter list sources
- BlockList Project (ads, tracking, malware, phishing, fraud, scam)
- EasyList + EasyPrivacy
- Peter Lowe's Ad Server List