Because the Accept-CH meta tag is not present on this page, client hints will not be forwarded to the server. We download the full file.

The following is the HTML we use to generate the image above.

<img sizes="(min-width: 740px) 740px, (min-width: 320px) 100vw"

The ?ch=Width,DPR parameter is an opt-in mechanism on the imgix service for the time being. That query parameter along with the meta tag must be present for a CH-capable browser to opt in to the behavior.

Read more about Client Hints