Web Technology Inspector

Web Technology Inspector is a privacy-first, read-only Chrome extension that explains how the current page is delivered and built. It reports observable network and response details—including security headers, compression, resource hints, realtime protocols, web servers, CDNs, cloud providers, domains, and resource counts—alongside page metadata, service workers, browser APIs, performance timing, media, and GPU information. Everything is processed locally. The extension uses no analytics or telemetry, makes no diagnostic requests, and never stores or displays page payloads, cookie values, raw URLs, IP addresses, or response-header values.