Learn to use AV1 to make videos on your website smaller and better quality. CLI instructions and cross-browser tricks.| evilmartians.com
Learn how to deliver optimized images with the smallest possible file size while maintaining visual quality, for improved page load times and user experience.| cloudinary.com
ImageOptim is excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop). It's useful for making Mac and iPhone/iPad applications smaller (if you configure Xcode to allow better optimization).| imageoptim.com
This report tracks the size and quantity of many popular web page resources. Sizes represent the number of bytes sent over the network, which may be compressed.| httparchive.org