PageSpeed
- Optimize DOM size
- Avoid serving legacy JavaScript to modern browsers
- Legacy JavaScript
- Duplicated JavaScript
- Use efficient cache lifetimes
- Avoid multiple page redirects
- Improve image delivery
- LCP request discovery
- Eliminate render blocking resources
- INP breakdown
- Preload largest contentful paint image
- PageSpeed shows error instead of grade
- Properly size images
- Lazy load third-party resources with facades
- Avoid document write
- Does not use passive listeners to improve scrolling performance
- Defer offscreen images
- Enable text compression
- Preconnect to required origins
- Preload key requests