This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
DPR header is a Client Hints header which represents the client device pixel ratio, which is the number of physical device pixels corresponding to every CSS pixel.
|Header type||Request header, Client hint|
|Forbidden header name||no|
|CORS-safelisted response header||no|
Accept-CH: DPR Accept-CH-Lifetime: 86400
Then on subsequent requests the client might send
DPR header back:
No specification found
No specification data found for
Check for problems with this page or contribute a missing
spec_url to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.
BCD tables only load in the browser