![]() ![]() The Resource Timing API did not support failed response code reporting. Improved HTTP Response Status Codes Reporting For The Resource Timing API A browser needs to understand the layout and design of a page before it can render and paint a website.ĭevs can help minimize re-calculation, styling, and repainting to prevent website slowdowns. When a browser comes across a stylesheet it holds page loading up until it finishes reading the file. The Performance Panel helps identify render-blocking resources like CSS, which delay the loading of a site. This update helps RUM users save time and optimize rendering paths. RUM tools did not have a simple way to check if a resource was blocking rendering.Ĭhrome 107 shipped a new feature for the Performance API that identifies render-blocking resources. Identifying Render Blocking Resources With The Performance API The API will ship with Stable Chrome 111. It helps understand why a page isn’t serving the cache to returning visitors. ![]() The new NotRestoredReason API feature improves error reporting for bfcache issues. New Update To The Back/Forward Cache Testing API Keep an eye on when your pages no longer serve from the bfcache. Use data to prove the value of technical SEO.
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