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/HTTP

Content-Length

The Content-Length entity header is indicating the size of the entity-body, in decimal number of octets, sent to the recipient.

Header type Entity header
Forbidden header name yes

Syntax

Content-Length: <length>

Directives

<length>
The length in decimal number of octets.

Specifications

Specification Title
RFC 7230, section 3.3.2: Content-Length Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing

Browser compatibility

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

See also

© 2005–2017 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Length