# How to eliminate render-blocking resources > CSS and synchronous scripts in the head stop the browser from painting anything until they arrive. Inline the critical CSS, defer the rest and every paint metric improves. Speed & Core Web Vitals · HTML version: https://getreport.app/learn/render-blocking-resources ## Render-blocking files Passing looks like: No render-blocking resources delay the first paint. **Why it matters.** Stylesheets and scripts in stop the browser from drawing anything until they have downloaded. Each one adds a round trip before the visitor sees the page. **How to fix it.** 1. Add defer or async to scripts that are not needed before the first paint, or move them to the end of . 2. Inline the CSS needed for the first screen and load the rest asynchronously (WordPress: "Optimize CSS delivery" in WP Rocket / LiteSpeed Cache). 3. Remove unused plugin CSS/JS from pages that do not need it. Check your own page: https://getreport.app/