Lighthouse Simulator

This tool runs a Lighthouse performance test at a range of different network speeds.

Pricing: Free

This shows how bandwidth and round-trip latency impact site performance metrics.

Learn more about observed and simulated metrics. Each simulated metrics is the average of an optimistic and a pessimistic estimate.

🌐 Load test with real browsers! Powered by Artillery + Playwright

Free

An online tool to enter a URL to see how well the images are optimized and what you can do to improve them.

Free

JS performance

Free