Defer, Async, and Module Scripts: A Field Guide for INP and TBT

A classic <script src="…"> with no attributes pauses HTML parsing while the file downloads and runs. An async script downloads in the background and runs as soon as it is ready, which can interrupt the parser mid-document. A defer script also downloads in the background, but it waits until parsing finishes, then runs in document order before... Weiterlesen: Defer, Async, and Module Scripts: A Field Guide for INP and TBT