performance-testing

Yes, you can capture LCP, FID, and CLS in Playwright tests by using performance observers to measure Core Web Vitals. The skill enables you to record these metrics and verify them against defined budgets within your automated test suite.

Enforcing performance budgets involves adding budget checks and basic performance assertions directly into your Playwright tests. This validates metrics like TTFB and resource loading against predefined limits automatically during CI runs.

Yes, you can inspect network timing and resource loading with Playwright. The skill utilizes navigation timing and resource timing to analyze throughput and identify resource loading bottlenecks across user flows.

You enable tracing and profiling within your Playwright test suite to investigate web performance regressions. This captures detailed execution traces across user flows to help identify the root cause of slow page loads.

To ensure a homepage loads under 2.5 seconds with stable CLS in CI, you instrument Playwright tests to capture Web Vitals and network timings, then apply automated budget assertions to fail tests on performance regression.