css-critical

Installation
SKILL.md

Inline critical CSS for faster rendering

Critical CSS eliminates render-blocking resources, enabling browsers to paint content immediately—directly improving LCP and FCP scores.

Quick Reference

  • Inline ~14KB of critical above-the-fold CSS in
  • Use tools: critical, critters, or Lighthouse to extract
  • Load remaining CSS asynchronously after page load
  • Automate in build process—don't manually maintain

Check

Analyze this page's CSS loading strategy to identify critical above-the-fold styles that should be inlined and non-critical styles that can be loaded asynchronously.

Fix

Extract and inline critical CSS for above-the-fold content, then load remaining CSS asynchronously to improve initial page render performance.

Installs
5
GitHub Stars
73.9K
First Seen
Aug 11, 2026
css-critical — thedaviddias/front-end-checklist