Site-Metrics – Website performance analyzer that's 10x faster than gpspeed

Summary: Site-Metrics analyzes website performance, security, accessibility, and SEO using Lighthouse-calibrated scoring. It delivers Core Web Vitals, detailed audits, and actionable insights instantly by analyzing HTML responses, headers, and sub-resources without a full headless browser audit.

What it does

It provides fast, accurate website audits by evaluating HTML, headers, and sub-resources, using the same log-normal curves as Lighthouse for scoring.

Who it's for

Developers needing quick performance checks during site iteration without the delay of full browser audits.

Why it matters

It reduces audit time significantly while maintaining accuracy, enabling faster development cycles.