Page Speed Test runs a full Lighthouse-style audit on any URL and returns performance scores, SEO and accessibility grades, all Core Web Vitals, and a prioritised list of issues ranked by impact. It's the fastest way to diagnose why a page is slow, failing SEO checks, or hurting user experience — without opening a browser.
The audit returns lab metrics (FCP, LCP, CLS, TBT, TTI, TTFB, Speed Index) alongside real-user CrUX data when available. CrUX data reflects actual user experience in the field and is more accurate than lab metrics for understanding how Google perceives your page. The top issues list sorts problems by their score impact so you know exactly what to fix first.
What you can do
- Score any URL on performance, SEO, accessibility, and best practices (0–100 each)
- Get all Core Web Vitals including LCP, CLS, INP, and TTFB with real-user data
- See a prioritised list of issues sorted by how much they hurt your score
- Audit in mobile (default) or desktop mode
- Audit individual pages, not just root domains
Who it's for
Web developers, SEO specialists, product managers, and marketers who need to understand and improve page performance. Useful for auditing landing pages before campaigns, diagnosing Core Web Vitals failures, and tracking improvements after optimisation work.
How to use it
- Use audit_url with the full URL including https://
- Default strategy is mobile — matches Google's mobile-first indexing; switch to desktop if needed
- Check the top_issues list first — they're sorted by impact on your score
- Use real-user CrUX data in core_web_vitals for the most SEO-relevant signals
Getting started
No setup required — paste any public URL to run an audit instantly.
