No render-blocking resources
What the check finds
Scripts or stylesheets delay first paint. It slows the page down without preventing anything from being read.
Why it matters for AI answers
Render-blocking files delay first paint for people, which hurts Core Web Vitals. Crawlers that read raw HTML are not affected, so this matters more for shoppers than for AI answers.
How to fix it
- Add defer or async to scripts that are not needed for the first paint.
- Inline the small amount of CSS needed above the fold and load the rest without blocking.
- Use <link rel="preload"> for the key font or hero image the first view depends on.
- Remove CSS and JS the page does not use.
Related checks
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