Encyclopedia / Quality

Lighthouse

Chrome's built-in audit for performance, accessibility, best practices and SEO.

Open DevTools, go to the Lighthouse tab and analyze the page, ideally in mobile mode. It's a lab test on one simulated device, so treat the score as a direction and Core Web Vitals from real visitors as the truth.

Related terms

Core Web Vitals Accessibility (a11y) Performance

More in Quality

Speed, accessibility, security and measurement, which every other layer depends on.

Performance Accessibility (a11y) Security headers Analytics

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