benchmark

Detect web performance regressions by comparing current page metrics against a saved baseline. The tool diffs navigation timing, resource usage, and bundle sizes to highlight changes introduced on the current branch.

A baseline performance report includes navigation timing, resource usage, bundle sizes, and network data. These metrics are collected from real-user page loads and saved to generate future comparison and trend reports.

Benchmark multiple pages by running measurements across targeted URLs to capture initial baselines. The tool tracks performance trends over time by automatically diffing subsequent metric snapshots against those saved baselines.

Yes, you can measure real-user page performance without configuring dependencies. The tool runs directly via a simple command, taking a target URL to collect navigation timing and generate a baseline comparison report.

The best way to compare current bundle sizes against a previous build is to load the saved baseline data. The tool automatically diffs current resource usage and bundle metrics against the baseline to expose any size regressions.

You need a saved baseline to measure page performance regressions because the tool requires an initial snapshot of navigation timing and network data. Without this baseline, there is no reference point to diff current metrics against for detecting changes.