Website speed test

Load any page in a real Chrome browser and get Core Web Vitals (LCP, CLS, TBT), load time, page weight, requests by type and a list of fixes.

Try . Free, no account needed.

Need this at scale?

The same lookup is one API call at 3 credits / request (one credit is $0.0003 to $0.001 depending on volume), with failed requests free.

cURL

curl "https://api.gridlode.com/v1/url/pagespeed?url=https%3A%2F%2Fexample.com" \
  -H "Authorization: Bearer $GRIDLODE_KEY"

Is this the same as Google PageSpeed Insights?

It measures the same Core Web Vitals in headless Chrome from our servers in Germany. Scores can differ because we don't throttle the network.

Can I test mobile?

Yes, the API takes device=mobile, which uses a phone viewport and a 4x slower CPU.

Can I track speed over time?

Yes. Create a monitor on this engine to record scores on a schedule.