# How the Lighthouse performance score works

> The score is a weighted mix of five lab metrics measured in a throttled Chrome. It is not what your visitors see, but it is the fastest way to find what slows them down.

Speed & Core Web Vitals · HTML version: https://getreport.app/learn/lighthouse-performance-score

## Lighthouse performance score

Passing looks like: Lighthouse performance score passes.

**Why it matters.** This is the number Google's own tools show for your page. It combines five of the lab metrics below (all except TTFB), weighted the way Lighthouse weights them. 90 and above is green.

**How to fix it.**

1. Work through the failed metrics and opportunities below in order of points; the score follows.

Check your own page: https://getreport.app/