MDN wants to talk to developers like you: https://qsurvey.mozilla.com/s3/8d22564490d8

Range

The Range HTTP request header indicates the part of a document that the server should return. Several parts can be requested with one Range header at once, and the server may send back these ranges in a multipart document. If the server sends back ranges, it uses the 206 Partial Content for the response. If the ranges are invalid, the server returns the 416 Range Not Satisfiable error. The server can also ignore the Range header and return the whole document with a 200 status code.

Header type Request header
Forbidden header name no

Syntax

Range: <unit> <range-start>-
Range: <unit> <range-start>-<range-end>
Range: <unit> <range-start>-<range-end>, <range-start>-<range-end>
Range: <unit> <range-start>-<range-end>, <range-start>-<range-end>, <range-start>-<range-end>

Directives

<unit>
The unit in which ranges are specified. This is usually bytes.
<range-start>
An integer in the given unit indicating the beginning of the request range.
<range-end>
An integer in the given unit indicating the end of the requested range. This value is optional and, if omitted, the end of the document is taken as the end of the range.

Examples

Range: bytes 200-1000, 2000-6576, 19000- 

Specifications

Specification Title
RFC 7233, section 3.1: Range Hypertext Transfer Protocol (HTTP/1.1): Range Requests

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari Servo
Range(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)
Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
Range(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)

See also

Document Tags and Contributors

 Contributors to this page: MhdHejazi, fscholz, teoli
 Last updated by: MhdHejazi,