Expires

Absolute time after which the response is stale.

Response header (sent by servers) caching

How it works

Superseded by Cache-Control: max-age when both are present.

Example

Expires: Sun, 19 Oct 2026 09:00:00 GMT

See it live: send any request in Endpoint Client and open the Headers tab, where every response header is explained. Specification: RFC 9111.

Related headers

Age

Seconds the response has spent in a shared cache.

Cache-Control

Caching rules for browsers, proxies and CDNs.

Vary

Request headers that change the response.