The Ultimate Guide to Web Performance. Part I - HTML & CSS | Helpful Web Development

The Ultimate Guide to Web Performance. Part I - HTML & CSS

#HTML

Minify HTML
Order your styles and scripts for pagespeed
Eliminate render-blocking resources
Minimize layout thrashing
Prioritize resources
Preload critical assets to improve loading speed
Establish network connections early
Prefetch resources
Implement adaptive serving

#CSS

Minify CSS
Remove unused CSS
Defer non-critical CSS
Minimize CSS requests by combining external CSS
Optimize CSS background images with media queries
Avoid CSS inside the body tag
Avoid expensive styles
Optimize CSS length