DevHTTP Tracker

Lightweight, read-only HTTP analyzer: see the redirect chain, request/response headers, and timing for the current tab.

DevHTTP Tracker is a lightweight developer tool for inspecting the HTTP behavior of the page you are viewing — without blocking or modifying any traffic. FEATURES • Redirect chain — follow every 301/302/307/308 hop from the original URL to the final destination, with status codes and reasons. • Final HTTP status — the final status code and its description (e.g. 404 Not Found, 403 Forbidden) shown front and center. • Headers — response and request headers in a clean, switchable tabbed view. • Timing — waiting (TTFB), content download, and total time for the navigation. • One-click copy — copy the full report as JSON, or copy the final URL. • Automatic dark / light theme that follows your system. PRIVACY-FIRST BY DESIGN • Read-only: it never blocks, modifies, or redirects requests. • No backend, no tracking, no ads. Nothing leaves your browser. • Data lives only in memory for the current session and is discarded when the tab is closed or the browser exits. Note: after installing, reload a page to start tracking it.