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

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

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

Expires: <http-date>

Directives

<http-date>

An HTTP-date timestamp.

Examples

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

Specifications

Specification Title
RFC 7234, section 5.3: Expires Hypertext Transfer Protocol (HTTP/1.1): Caching

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support  
Full support

See also

Document Tags and Contributors

Contributors to this page: AndrzejSala, meridius, fscholz
Last updated by: AndrzejSala,