Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Device-Memory device client hint request header field indicates the approximate amount of available RAM on the client device. The header is part of the Device Memory API.
|Header type||Request header, Client hint|
|Forbidden header name||no|
- Client Hints are accessible only on secure origins (via TLS).
- A server has to opt in to receive the
Device-Memoryheader from the client, by sending the
- Servers that opt in to the
Device-Memoryclient hint will typically also specify it in the
Varyheader. This informs caches that the server may send different responses based on the header value in a request.