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PageSpeed Insights vs GTmetrix: catalog facts
PageSpeed Insights	GTmetrix
Free Free to use.	Freemium Free tests and a free account, with paid plans for more features.
Web	Web
Field and lab data side by side Separate mobile and desktop results	Test locations in 25 regions Configurable connection speed, user agent and cookies
Field data only appears for URLs with enough Chrome traffic Single-page checks rather than ongoing monitoring	Many options and locations require an account or paid plan
Web application	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.