PageSpeed
- Preconnect to required origins
- Enable text compression
- Does not use passive listeners to improve scrolling performance
- Avoid document write
- Avoid chaining critical requests
- Keep request counts low and transfer sizes small
- Avoid multiple page redirects
- Avoid serving legacy JavaScript to modern browsers
- Lazy load third-party resources with facades
- Image elements do not have explicit width and height
- Use HTTP/2
- Preload largest contentful paint image
- Issues with Google Search Console
- Interaction to Next Paint
- PageSpeed shows error instead of grade