Overview
Monitor Performance Quality Over Time
Section titled “Monitor Performance Quality Over Time”Website Vitals helps you measure how your website performs in a real browser running in the cloud.
It is designed to track performance regressions that can hurt user experience, conversion, and search visibility.
When to Use Website Vitals
Section titled “When to Use Website Vitals”Choose this test type when you want to know whether a page is getting slower, less stable, or weaker in Lighthouse-based quality signals.
This is a strong fit for:
- homepage and landing page performance monitoring,
- release validation after frontend changes,
- SEO-sensitive page checks,
- Core Web Vitals trend tracking,
- and ongoing Lighthouse score monitoring.
What It Measures
Section titled “What It Measures”Website Vitals can evaluate threshold-based metrics such as:
- LCP for loading speed,
- CLS for layout stability,
- TBT and TTI for responsiveness,
- and Lighthouse scores for Performance, Accessibility, Best Practices, and SEO.
When a configured threshold is missed, the test fails.
What It Does Well
Section titled “What It Does Well”Website Vitals is built for teams that care about performance as an ongoing quality signal.
- It helps catch regressions after releases.
- It gives repeatable browser-based measurements from selected locations.
- It turns performance expectations into pass or fail thresholds.
- It complements uptime and scenario monitoring instead of replacing them.
What It Does Not Replace
Section titled “What It Does Not Replace”Website Vitals does not replace technical uptime checks or full browser journey validation.
If you need to verify that a page is reachable and returns the correct technical response, use Website Availability.
If you need to confirm that a user flow still works visually and functionally, use Website Scenario.