- Generate WebP versions for pixel assets and use them where supported. - [SVGs can also be optimized](https://images.guide/#svg-optimization). - More [dynamic resizing](https://images.guide/#delivering-hidpi-with-srcset) might be appropriate. - [lazysizes](https://github.com/aFarkas/lazysizes) looks interesting. [It's probably worth](https://images.guide/#image-processing-cdns) using [Cloudinary's API](https://cloudinary.com/documentation/node_integration) for this (more relevant for server).