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/HTTP

Content-Length

The Content-Length entity header indicates the size of the entity-body, in bytes, sent to the recipient.

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 compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Content-Length Yes 12 Yes Yes Yes Yes
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
Content-Length Yes Yes Yes Yes Yes Yes

See also

© 2005–2020 Mozilla 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