Preface 1． The Mobile Web World Form Factors Mobile Hardware Mobile Networks Mobile Operating Systems Engines Rendering Engines Execution Engines Web Platforms Web Apps lOS Home Screen Web Apps Chrome Home Screen Web Apps Progressive Web Apps Summary of Web Apps Web Views Native Web Apps In-App Browsers Pseudo-Browsers The Web View on iOS The Web View on Android The Web View on Windows Summary of Web Views Web Browsers Stats Cloud Versus Direct Browsers Stock Browsers iOS Browsers Android Browsers Windows Browsers The Mobile Web Is Not Just a Narrow Viewport 2． Where to Measure Performance Simulators and Emulators Android Safari on iOS Internet Explorer Microsoft Edge Real Devices Open Device Lab Cloud-Based Services Network Connection Desktop Simulators On-Device Connection Simulators Selecting Where to Measure Is Important 3． Web Performance Basics Loading Measurement Basics The Waterfall Chart Filmstrip The HAR Format Speed Index What to Measure Custom Metrics The RAIL Approach Responsiveness Measurement Basics Frames per Second Profiling Charts CPU Profiling Memory Profiling Mixed Profiling You Can't Improve Something If You Don't Measure It 4． Measurement Tools Remote Inspectors Safari on lOS Chrome for Android Internet Explorer and Edge Vorlon．js 5． Performance APls 6． Optimizing for the First Visit 7． Optimizing After First Load 8． Optimizing Responsiveness and the Post-Loading Experience 9． Responsive Web Design 10． Extreme Mobile Web Performance 11． The Native Side of the Web 12． Mobile Web Performance Checklist Index
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