Performance check
The page is not blocked by head resources
Render blocking CSS and JavaScript in the document head.
medium severityperf.render-blocking
Run this check on your site
Runs just this check in quick mode. The report opens with the evidence and the fix.
Why it matters
The browser cannot paint anything until it has read the blocking resources in the head. Every one of them delays the first pixel.
How to fix it
Inline the small amount of critical CSS, load the rest asynchronously, and defer scripts that are not needed for the first view.
The details
- Category
- Performance
- Severity of a failure
- medium
- Confidence
- medium
- Needs a browser
- No
- Check id
- perf.render-blocking