A controlled test
Lighthouse loads one page in a simulated environment. It is useful for finding technical opportunities, but scores can vary slightly between runs.
Free website audit
Enter your homepage. The test runs Google Lighthouse in simulated mobile and desktop environments and checks your Core Web Vitals.
Audit complete
How to read the report
Lab data and real-user data answer different questions.
What real visitors experienced
CrUX aggregates eligible Chrome visits over a rolling period. Smaller and newer websites often do not have enough public traffic to qualify.
What scores cannot see
An automated test cannot judge whether the message is clear, the visual design fits the brand, or the page converts the right customers.
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