Managing images is no small feat in a website. Almost all modern websites rely heavily on images to present content to the users.
In this chapter, we looked at which image formats to use and when. We also looked at how to optimize your images for websites. We discussed the difference between progressive and optimized images as well.
Conditional loading can greatly help you to load your site faster. In this chapter, we briefly discussed how to use conditional loading to improve your site's performance.
We touched on server-side optimization using cache and ETags and we considered media queries for retina displays.