Performance will vary based on usage, system configuration, application workload, network connection, and other factors. Page load performance tested using snapshot versions of 10 popular websites under simulated network conditions with prerelease Safari 14.0.1 and Chrome v.121 on macOS. Tested with prerelease Safari 14.0.1, Chrome v.75, and Firefox v81.0.1 on macOS, as well as Chrome v.75, Microsoft Edge v86.0.622.38, and Firefox v81.0.1 on Windows Home, with WPA2 Wi-Fi network connection. Scores represent browsers that completed the test. Performance compared to other browsers on Mac and PC using JetStream 2, MotionMark 1.1, and Speedometer 2.0 benchmarks and Windows 10 Home, version 2004, running in Boot Camp. Not all features are available on all devices. Safari tested with HD 1080p content, Chrome and Firefox tested with HD 720p content, all on macOS.

Battery life tested with display brightness set to 12 clicks from bottom or 75 percent.

“World’s fastest browser,” “industry-leading battery life,” and “loads frequently visited sites an average of 50 percent faster than Chrome”: Testing conducted by Apple in October 2020 on production 1.4GHz quad-core Intel Core i5-based 13-inch MacBook Pro systems with 8GB RAM, 256GB SSD, and prerelease macOS Big Sur.

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