HTTP headers | Content-Range

The Content-Range HTTP header is a response header that indicates where a partial message belongs in a full body massage. This header is sent with a partial entity-body to specify where in the full entity-body the partial body should be applied.

Syntax:

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

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

Content-Range: <unit> */<size>

Directives:

• <unit>: This specifies the unit of content range. This value is usually in bytes.
• <range-start>: An integer that specifies the beginning of the requested range in a given unit.
• <range-end>: An integer that specifies the ending of the requested range in a given unit.
• <size>: This specifies the total size of the document. The ‘*’ is used when the value is unknown.

Examples:

Content-Range: bytes 500-1000/65989

It specifies the unit of the range as bytes and states the range-start as 500 bytes while the range-end as 1000 bytes. The total size of the document is 65989 bytes.

Content-Range: bytes 50-1000/*

It specifies the unit of the range as bytes and states the range-start as 50 bytes while the range-end as 1000 bytes. The total size of the document is unknown.

Supported Browsers The following browsers are compatible with HTTP Content-Range:

• Google Chrome
• Internet Explorer
• Opera
• Firefox
• Safari