render-blocking

Installation
SKILL.md

Eliminate render-blocking resources

Render-blocking resources prevent the browser from painting anything on the screen, leading to a "white screen" effect and poor user experience.

Quick Reference

  • Load non-critical CSS and JS asynchronously using defer, async, or media queries
  • Inline critical CSS to allow the page to start rendering immediately
  • Avoid @import in CSS as it creates serial request chains

Check

Review the page's resources and identify any CSS or JavaScript files that are blocking the initial render of the page.

Fix

Update the loading strategy for render-blocking resources by using defer, async, or inlining critical styles.

Explain

Installs
1
GitHub Stars
73.0K
First Seen
Jun 8, 2026
render-blocking — thedaviddias/frontendchecklist