Preconnect in HTML
Learn link rel=preconnect: open the connection to an important server early. Understand why crossorigin matters, how many to use, and how to pick the right origins, with a connection lab and an origin picker.
Learn link rel=preconnect: open the connection to an important server early. Understand why crossorigin matters, how many to use, and how to pick the right origins, with a connection lab and an origin picker.
Learn what resource hints are and how to choose between dns-prefetch, preconnect, preload and prefetch. Includes a hint builder and a live checker for common mistakes.