Find render-blocking resources
List all resources that are blocking rendering.
It's currently Chromium only
Snippet
function RenderBlocking({startTime, duration, responseEnd, name, initiatorType}) { this.startTime = startTime this.duration = duration this.responseEnd = responseEnd this.name = name this.initiatorType = initiatorType } function findRenderBlockingResources() { return window.performance.getEntriesByType('resource') .filter(({renderBlockingStatus}) => renderBlockingStatus === 'blocking') .map(({startTime, duration, responseEnd, name, initiatorType}) => new RenderBlocking({startTime, duration, responseEnd, name, initiatorType})); } console.table(findRenderBlockingResources())