Lighthouse Simulator

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

Performance Testing Tools

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You can now run Playwright tests on real iOS devices with Safari

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Playwright users can now test on real iPhones and iPads with Safari. BrowserStack’s latest launch lets you run parallel tests across 1000+ device-browser combinations, capture logs, videos, and text reports in one place, and simulate real-world conditions to ensure full coverage. Run your first test here!

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.

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Web

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