What this test measures
This is a server-side network and document analysis from Helsinki. Browser Core Web Vitals require a browser lab or field data and are never fabricated.
Website Speed Test
Inspect DNS, connection, TLS, server response, redirects and the page payload from one clean timeline.
Server-side lab testHelsinki · live diagnostic
Point-in-time measurements are not stored on the server
Start with TTFB
A slow initial response delays every resource after it. Fix origin, database or cache latency before chasing small asset savings.