Resource Guardian

Discover, filter and block third-party resources instantly.

Resource Guardian helps you understand and control everything a page loads. Instantly see first‑ and third‑party hosts, then block what you don’t want with one click—no scripts or advanced setup needed. Key features: Live host discovery grouped by base domain (first‑ vs third‑party) One‑click block/unblock for domains and specific URLs (Manifest V3 + DNR) Per‑URL preview with open/copy tools Search, filters, sorting, and bulk actions per section Export/import of your block lists (domains and exact URLs) Optional risk checks: intersect with URLhaus (malware) and StevenBlack; auto‑block third‑party matches Internationalized UI with many languages and RTL support No data collection; all processing is local Why these permissions: Read and change data on all sites: required to list and block the requests you choose Declarative Net Request: to install dynamic blocking rules WebRequest (passive): to measure and display requests (does not intercept or modify traffic) Storage: to save your local settings and lists Privacy We do not collect, transmit, sell, or share user data. All analysis happens locally on your device. See the Privacy Policy for details.