Expires

The Expires HTTP header contains the date/time after which the response is considered expired.

Invalid expiration dates with value 0 represent a date in the past and mean that the resource is already expired.

Note: If there is a Cache-Control header with the max-age or s-maxage directive in the response, the Expires header is ignored.

Header type Response header
Forbidden header name no
CORS-safelisted response header yes

Syntax

http
Expires: <http-date>

Directives

<http-date>

An HTTP-date timestamp.

Examples

http
Expires: Wed, 21 Oct 2015 07:28:00 GMT

Specifications

Specification
HTTP Caching
# field.expires

Browser compatibility

BCD tables only load in the browser

See also