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ByteCheck vs KeyCDN Website Speed Test: catalog facts
ByteCheck	KeyCDN Website Speed Test
Free Free to use online.	Free Free to use.
Web	Web
Focused TTFB measurement Quick and repeatable	Full waterfall with per-asset timings and headers Choice of 10 test locations
Measures server response only, not full page load Only tests publicly reachable URLs	One location per test run Fewer metrics than dedicated performance suites
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account 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.