index.md

---

title: Content-Range
slug: Web/HTTP/Headers/Content-Range
browser-compat: http.headers.Content-Range

---

{{HTTPSidebar}}

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

Header type	{{Glossary("Response header")}}, {{Glossary("Payload header")}}
{{Glossary("Forbidden header name")}}	no
{{Glossary("Simple response header", "CORS-safelisted response-header")}}	no

Syntax

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

Directives

• <unit>

  • : The unit in which ranges are specified. This is usually bytes.

• <range-start>

  • : An integer in the given unit indicating the start position (zero-indexed & inclusive) of the request range.

• <range-end>

  • : An integer in the given unit indicating the end position (zero-indexed & inclusive) of the requested range.

• <size>

  • : The total length of the document (or '*' if unknown).

Examples

Content-Range: bytes 200-1000/67589

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{HTTPHeader("If-Range")}}

• {{HTTPHeader("Range")}}

• {{HTTPHeader("Content-Type")}}

• {{HTTPStatus("206")}} Partial Content

• {{HTTPStatus("416")}} Range Not Satisfiable