SEO Snapshot vs Google Lighthouse

Both are free and both are useful — they just optimize for different things. Google Lighthouse is the authoritative source for performance and Core Web Vitals and runs inside Chrome. SEO Snapshot is a URL-based, SEO-focused auditor that adds server security headers, copy-paste fixes, history, and shareable reports. Many people use both.

When to use Lighthouse

You want the definitive performance score, Core Web Vitals lab data, or PWA/best-practices audits, and you are comfortable running it in Chrome DevTools or PageSpeed Insights.

When to use SEO Snapshot

You want a fast SEO-focused audit from just a URL — including real HTTP security headers, 100+ on-page checks, and copy-paste fixes — with a saved history and a link you can share with a client or teammate.