Content-Length

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

Header type Request header, Response header, Payload header
Forbidden header name yes
CORS-safelisted response header yes

Syntax

Content-Length: <length>

Directives

<length>

The length in decimal number of octets.

Specifications

Specification
Unknown specification
# field.content-length

Browser compatibility

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See also