Chrome now supports HTTP 103 Early Hint status to enable faster loading of page resources such as CSS and JS

Google Chrome now supports the HTTP Early Hint 103 status. Early Hint 103s are used to indicate resources (such as CSS, JS, Images etc.) which are required by the page and are sent BEFORE 200 OK responses…

… This means the browser DOESN’T HAVE TO WAIT a couple of hundred milliseconds on the 200 response but can start loading the resources immediately which can result in faster final page rendering as things like CSS can be loaded quicker.

I’ve created the image below (adapted from here) to try and show the idea. Click on the image for a larger view in a new tab…