Resource timing (initial support)
Widely available since 2020-03-19
PerformanceResourceTiming entries report when network events happen while loading a resource, such as when connections start and end. You can use this information to measure loading times.
Learning resources on MDN
- PerformanceResourceTiming: decodedBodySize property
- PerformanceResourceTiming: encodedBodySize property
- PerformanceResourceTiming: transferSize property
Browser support (view on caniuse.com)
- Chrome 29 Released on 2013-08-20
- Chrome Android 29 Released on 2013-08-21
- Edge 12 Released on 2015-07-29
- Firefox 35 Released on 2015-01-13
- Firefox for Android 35 Released on 2015-01-13
- Safari 11 Released on 2017-09-19
- Safari on iOS 11 Released on 2017-09-19
Specifications
- Resource Timing, from Web Performance Working Group (W3C).