Join egghead, unlock knowledge.

Want more egghead?

This lesson is for members. Join us? Get access to all 3,000+ tutorials + a community with expert developers around the world.

Unlock This Lesson
Become a member
to unlock all features

Level Up!

Access all courses & lessons on egghead today and lock-in your price for life.


    Optimize Assets Delivery using preload and prefetch


    By default, browsers load the assets in a render-blocking way. Modern browsers introduced prefetch and preload which let us specify the priority for a resource without blocking the first render..

    This lesson shows you how to use preload and prefetch on an external css.