This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
Eric Portis
ericportis.com
did:plc:554zgjahdelvrbspjpeofd2o
Hm, looks like MDN could indeed use some work https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Width
and caniuse is out of date https://caniuse.com/client-hints-dpr-width-viewport
But the Web Platform Tests are in ok shape: https://wpt.fyi/results/client-hints. And the spec does match Chrome's implementation. https://wicg.github.io/responsive-image-client-hints/
2025-12-10T23:38:17.328Z