ProtoConsent

A browser-side consent control panel that enforces your data-use preferences per site and purpose.

ProtoConsent is a browser extension that gives you purpose-based control over how websites may use your data - directly from your browser, with no central server. You set a privacy profile (Strict, Balanced, or Permissive) and adjust six purpose toggles: functional, analytics, ads, personalisation, third-party services, and advanced tracking. ProtoConsent enforces your choices at the network level, blocking requests before they leave the browser. KEY FEATURES • Two operating modes - Blocking mode blocks requests directly using 58,000+ curated domains organised by purpose. Monitoring mode runs on top of your existing ad blocker and shows what each tool does, per purpose, in the Overview dashboard. • Enhanced protection on by default - curated blocklists, cosmetic filtering, CNAME detection, URL parameter stripping, and regional filters all enabled from install. Lists refresh automatically to stay up to date. • Overview tab - real-time dashboard with purpose-attributed block counts, signal indicators (GPC, Client Hints, CMP, site declarations), coverage metrics, and parameter stripping activity. • Consent banner auto-response - banners from 31 CMP frameworks (including IAB TCF v2.2) are answered automatically based on your purposes, plus site-specific signatures. No click simulation. • Protection lists - 25 curated blocklists from trusted open-source projects. Three presets or individual list control. Lists can auto-activate based on your denied purposes. • Regional filter lists - 30 language-specific blocking and cosmetic filters, auto-detected from your browser language. • Privacy signals - conditional GPC header per site (not a global toggle), Client Hints stripping to reduce fingerprinting, and URL parameter stripping (utm_source, fbclid, etc.). • Log monitoring - real-time view of blocked requests, GPC signals, blocked domains by purpose, CNAME cloaking indicators, CMP banner detection, and domain whitelist management. • Site declarations - websites can publish a .well-known/protoconsent.json to declare their data practices. Displayed in a side panel with Consent Commons icons. • Inter-extension API - other privacy extensions can query your consent state. Disabled by default, read-only, per-extension allowlist. • Local-only and open source - no account, no cloud, no backend. Extension GPL-3.0+, SDK MIT, docs CC BY-SA 4.0. WHAT IT IS NOT ProtoConsent is not a VPN or anonymity tool. It is a personal consent control panel in the browser, organised around purposes. It can coexist with existing ad blockers and consent tools. Learn more: https://protoconsent.org Live demo: https://demo.protoconsent.org Source code: https://github.com/ProtoConsent/ProtoConsent