Resource Hints – What is Preload, Prefetch, and Preconnect?[转]

Today we are going to explore current resource hints and directives which can be another great way to boost the performance on your website or web application. You might have heard of preload, prefetch, and preconnect, but we want to dive deeper into the differences between them how you can benefit from them. Some of the advantages of these is that they allow web developers to optimize delivery of resources, reduce round trips, and fetch resources to deliver content faster while a user is browsing a page.

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