The Content-Range response HTTP header indicates where in a full body message a partial message belongs.

Header type Response header, Payload header
Forbidden header name no
CORS-safelisted response-header no


Content-Range: <unit> <range-start>-<range-end>/<size>
Content-Range: <unit> <range-start>-<range-end>/*
Content-Range: <unit> */<size>


The unit in which ranges are specified. This is usually bytes.
An integer in the given unit indicating the beginning of the request range.
An integer in the given unit indicating the end of the requested range.
The total size of the document (or '*' if unknown).


Content-Range: bytes 200-1000/67589


Specification Title
RFC 7233, section 4.2: Content-Range Hypertext Transfer Protocol (HTTP/1.1): Range Requests

Browser compatibility

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See also