Site Status Inspector

Displays general, request, and response headers for the active page, with a status code badge indicator.

Site Status Inspector is an all-in-one developer diagnostic tool that provides an instant X-ray of any website’s HTTP status, response headers, network resources, SEO parameters, and loading waterfall — right from your browser toolbar. Whether you are debugging API responses, inspecting cache headers, auditing redirect chains, analyzing Core Web Vitals/timings, or diagnosing on-page SEO issues, Site Status Inspector gives you DevTools-level insights in a lightweight, clean popup interface. ─────────────────────────────────── ⚡ KEY FEATURES ─────────────────────────────────── 🔴 Real-Time Status Badge • Displays live HTTP status code badges directly on the extension icon (200 OK, 301/302 Redirect, 404 Not Found, 500 Server Error). • Color-coded indicators let you verify site health at a glance across open tabs. 📡 Full HTTP Headers Inspector • Inspect General, Request, and Response headers for document requests and subresources. • Break down Set-Cookie attributes, Cache-Control policies, Security headers (CSP, HSTS, X-Frame-Options), and Server IPs. • One-click copying for individual header values or entire header sets. 🌐 Live Network Resource Monitor • View all page subrequests (XHR, Fetch, Scripts, Stylesheets, Images, Fonts, WebSockets). • Filter by resource type and search by URL or status code in real time. • Inspect individual payloads, latency, and transferred byte sizes. ⚡ Deep Performance & Waterfall Timings • Accurate Navigation Timing API integration: DNS Lookup, TCP Handshake, TTFB (Time to First Byte), and Content Download. • Interactive visual waterfall timeline with milestone markers for DOM Interactive, DOM Content Loaded, and Total Page Load. • Clear metrics for transfer size, encoded body size, and decoded cache savings. 🔍 On-Page SEO Quick Audit • Core metadata verification: Title tag length, Meta Description length, Canonical URLs, and Robots directives. • Headings structure audit (H1 through H6 hierarchy count). • Image accessibility check (detects missing Alt attributes). • Link breakdown (Internal vs. External, Dofollow vs. Nofollow). ─────────────────────────────────── 🔒 PRIVACY & SECURITY ─────────────────────────────────── • Zero data collection: Everything runs 100% locally on your machine. • No external tracking, analytics, or third-party servers. • Safe, lightweight Manifest V3 architecture with persistent session cache. Built for web developers, DevOps engineers, QA testers, and SEO professionals who need fast, accurate diagnostic insights without opening heavy browser DevTools panels.