Images (open cloud convert now)

• [ ] Convert images to WebP or AVIF: CloudConvert, Squoosh
• [ ] Compress all images before upload: TinyPNG, Squoosh
• [ ] Add responsive image sizes (srcset): Chrome DevTools Coverage
• [ ] Lazy-load every below-fold image: PageSpeed Insights
• [ ] Remove large or unnecessary background images: DevTools Network

JavaScript + CSS

• [ ] Minify all files: CleanCSS or CSSNano

JavaScript

• [ ] Delete unused JS libraries: DevTools Coverage
• [ ] Break oversized JS bundles into smaller chunks: DevTools Sources
• [ ] Delay slow third-party scripts that block rendering: GTmetrix
• [ ] Reduce JS execution time by removing expensive functions: DevTools Performance

CSS

• [ ] Inline only critical above-fold CSS: Lighthouse
• [ ] Load non-critical CSS asynchronously: GTmetrix waterfall
• [ ] Remove unnecessary font CSS and extra weights: DevTools Network

Server and Delivery

• [ ] Enable Brotli or Gzip compression: IsItGzip
• [ ] Use HTTP/2 or HTTP/3: Geekflare Audit