What is image optimization?
Image optimization is a set of measures to provide lowest possible weight of image file without any significant quality loss.
Here is a list of techniques to fully optimize image performance and put it on autopilot:
- Changing format to WebP, for browsers that support it.
- Optimizing quality.
- Making images responsive to adapt to a vast variety of user devices.
- Showing off-screen images only when needed: lazy-loading (which is now native in Chrome).
- Setting up CDN with built-in optimization.