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The Accept-Ranges response HTTP header is a marker used by the server to advertise its support of partial requests. The value of this field indicates the unit that can be used to define a range.

In presence of an Accept-Ranges header, the browser may try to resume an interrupted download, rather than to start it from the start again.

Header type Response header
Forbidden header name no


Accept-Ranges: bytes
Accept-Ranges: none


No range unit is supported, this makes the header equivalent of its own absence and is therefore rarely used, though some browsers, like IE9, it is used to disable or remove the pause buttons in the download manager.

The unit for ranges are bytes.


Accept-Ranges: bytes


Specification Title
RFC 7233, section 2.3: Accept-Ranges Hypertext Transfer Protocol (HTTP/1.1): Range Requests

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes Yes Yes Yes ?

See also

Schlagwörter des Dokuments und Mitwirkende

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 Zuletzt aktualisiert von: fscholz,