benchmark

You can detect web performance regressions in a pull request by measuring page load times, Core Web Vitals, and resource sizes, then comparing current runs against saved baselines to surface warnings.

The best way to baseline and compare Core Web Vitals across builds is to capture initial metrics like TTFB, FCP, and LCP, then run diffs against subsequent builds to visualize performance trends.

You can measure page load times and resource sizes for specific routes by targeting URLs like /, /canary, and /dashboard to extract page-level metrics and analyze resource loading behavior.

Yes, you need a compatible environment with the browse tool, JavaScript evaluation capabilities, and the ability to save baselines and compare current runs to previous ones.

Yes, you can visualize performance trends and diffs to guide optimization by capturing baseline page metrics and generating trend reports that highlight resource size changes and web vitals regressions.

You should use automated performance benchmarking in your deployment workflow when targeting PR workflows to catch page load time regressions and Core Web Vitals drops before they reach users.