Site Pulse — technical audit in one minute

A working audit tool, not a mockup: enter any URL and a real headless Chrome opens the page, measures Core Web Vitals from the browser's own Performance API, switches to mobile viewport, parses SEO basics, checks security headers, robots/sitemap and internal links. The result is a scored report with prioritised findings, a plain-language fix for each, and a rough cost estimate. Reports live at a permanent link for 14 days.

• Real Chrome measurement: LCP, CLS, TTFB, weight, requests, JS errors
• Mobile pass at 390×844: horizontal scroll, small tap targets, viewport
• SEO + security: title/description/H1/canonical/OG/JSON-LD, HSTS, CSP, gzip
• SSRF protection: private ranges and cloud metadata IPs are refused before launch
• Queue with per-IP, per-host and daily caps; 23 offline tests on scoring rules