Performance
Web performance problems
Causes rather than guessed metrics: what is blocking the render, what is uncompressed, what is shifting the layout. Every one is measured from the response, not estimated from a score.
10 checks · 7 with framework-specific fixes
Every check on this surface
- How to fix render-blocking scriptsNo render-blocking scripts in the head · weight 8
- How to fix cumulative layout shift from imagesImages declare their dimensions · weight 8
- How to enable gzip or brotli compressionResponses are compressed · weight 6
- How to set Cache-Control on static assetsStatic assets are cacheable · weight 6
- How to stop web fonts blocking textWeb fonts do not block text · weight 4
- How to use srcset for responsive imagesImages are served at the size they are displayed · weight 4
- My HTML document is too largeHTML document is a reasonable size · weight 4
- Should I use WebP or AVIF instead of JPEGModern image formats · weight 4
- How to lazy-load images correctlyBelow-the-fold images are lazy-loaded · weight 4
- When to use preconnect resource hintsThird-party origins are preconnected · weight 3
Check all of this against your own site
The audit runs these together with the other groups and returns what failed, what it costs you, and the fix for your framework.
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