Page speed & Core Web Vitals checker.
Paste any URL to see its real world Core Web Vitals and Lighthouse performance score. Free, instant, no account required.
What we measure
The metrics Google ranks on.
LCPLargest Contentful Paint
Loading: when the main content appears.
INPInteraction to Next Paint
Responsiveness: how fast the page reacts.
CLSCumulative Layout Shift
Stability: how much the layout jumps.
FCPFirst Contentful Paint
When the first pixel of content renders.
TTFBTime to First Byte
How fast your server responds.
ScorePerformance score
Google's 0 to 100 Lighthouse rating.