Useful links and resources
- WordPress Oxford slides
- Great tool for optimising images manually — squoosh.app
- Serving multiple image qualities depending on screen density — Jake Archibald
- Image Optimisation — book by Addy Osmani
- Example Advanced Custom Fields abstraction
- Performance and feature comparison of major Image CDNs (2019) — Maximiliano Firtman
- HTTP Archive Web Almanac — CMS chapter
- Announcement of formation of WordPress Performance Team
- A look at the Cloudinary WordPress Plugin — CSS Tricks