PageSpeed Insights review: our take
PageSpeed Insights is the reference test for one page's speed, free and with no account needed. It reports two things at once: field data from the Chrome User Experience Report, meaning LCP, INP, CLS, FCP and TTFB measured on real visitors over the previous 28 days, and a Lighthouse lab run that scores Performance, Accessibility, Best Practices and SEO with a list of fixes. The API returns the same results and runs without a key, though a key is recommended for frequent automated queries.
It tests one URL at a time, and a low-traffic page gets no field data because CrUX has too few samples. For a whole site, the free version of Screaming Frog crawls 500 URLs.
What PageSpeed Insights does
PageSpeed Insights reports how a page performs on mobile and desktop, combining real-user field data from the Chrome User Experience Report (LCP, INP, CLS, FCP, TTFB over the previous 28 days) with lab data from Lighthouse. The Lighthouse run scores Performance, Accessibility, Best Practices and SEO and lists audits with suggestions for improvement. The same results are available through the PageSpeed Insights API.
Who PageSpeed Insights is for
Best for
- checking a single page's Core Web Vitals
- developers debugging load performance
- site owners preparing for Google's page experience signals
Not for
- site-wide crawling: it tests one URL at a time
- low-traffic pages: field data is missing when CrUX has too few samples
PageSpeed Insights features
- F1Core Web Vitals assessment
- F2Real-user data from Chrome UX Report (CrUX)
- F3Lighthouse lab diagnostics
- F4Performance, Accessibility, Best Practices and SEO scores
- F5Mobile and desktop reports
- F6PageSpeed Insights API
PageSpeed Insights pricing and plans (2026)
| Plan | Monthly | Billed yearly, per month | What it includes |
|---|---|---|---|
| PageSpeed Insights | $0 | — | web tool needs no account; API usable without a key, a key recommended for frequent automated queries |
Free plan: yes. Prices as listed by the vendor, before tax; they change, so check the pricing page before you buy.
PageSpeed Insights interface
PageSpeed Insights FAQ
- Is PageSpeed Insights free?
- Yes. PageSpeed Insights is free to use.
- What are the alternatives to PageSpeed Insights?
- Tools that cover the same jobs include Screaming Frog SEO Spider, SEOquake: On-Page SEO Checker, Seobility, Google Search Console.