Hey Product Hunt! I'm Junaid, and I built Site-Metrics because Google PageSpeed feels too slow when you're iterating on a site. The key insight: you don't always need a full headless browser audit. For 90% of quick checks during development, analyzing the HTML response + headers + sub-resources gives you accurate enough scores in a fraction of the time. The scoring uses the same log-normal curves Lighthouse uses (FCP p10=1800ms, LCP p10=2500ms, TBT p10=200ms, etc.), so the numbers aren't made up — they're calibrated to real Lighthouse thresholds. Built with a modern stack: Bun for the runtime (incredibly fast), React 19, Tailwind v4, and deployed on Vercel Edge Functions for zero cold starts. Would love your feedback — what audits would you want added?

Site-Metrics

Website performance analyzer that's 10x faster than gpspeed

Website performance analyzer that's 10x faster than gpspeed