Benchmark -- Performance Baseline and Regression Detection

Measure and compare performance metrics to detect regressions.

When to Use

• Before and after a PR to measure performance impact
• Setting up performance baselines for a project
• When users report "it feels slow"
• Before a launch -- ensure you meet performance targets
• Comparing your stack against alternatives

Modes

Mode 1: Page Performance

Measures real browser metrics: LCP, CLS, INP, FCP, TTFB, total page weight, JS bundle size, CSS size, image weight, network request count.

Mode 2: API Performance