Resource timingPerformanceResourceTiming 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.performancePerformancewidely2017-09-192020-03-19https://w3c.github.io/resource-timing/resource-timinghttps://developer.mozilla.org/docs/Web/API/PerformanceResourceTimingapi.Performance.clearResourceTimingsapi.Performance.resourcetimingbufferfull_eventapi.Performance.setResourceTimingBufferSizeapi.PerformanceResourceTimingapi.PerformanceResourceTiming.connectEndapi.PerformanceResourceTiming.connectStartapi.PerformanceResourceTiming.contentTypeapi.PerformanceResourceTiming.deliveryTypeapi.PerformanceResourceTiming.domainLookupEndapi.PerformanceResourceTiming.domainLookupStartapi.PerformanceResourceTiming.fetchStartapi.PerformanceResourceTiming.firstInterimResponseStartapi.PerformanceResourceTiming.initiatorTypeapi.PerformanceResourceTiming.nextHopProtocolapi.PerformanceResourceTiming.redirectEndapi.PerformanceResourceTiming.redirectStartapi.PerformanceResourceTiming.renderBlockingStatusapi.PerformanceResourceTiming.requestStartapi.PerformanceResourceTiming.responseEndapi.PerformanceResourceTiming.responseStartapi.PerformanceResourceTiming.responseStatusapi.PerformanceResourceTiming.secureConnectionStartapi.PerformanceResourceTiming.toJSONapi.PerformanceResourceTiming.workerStartapi.PerformanceResourceTiming.worker_supporthttps://nowyoucanuse.com/features--resource-timing.html