View in EnglishAlways switch to English

Content-Length

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨2015年7月⁩.

HTTPContent-Length 标头表示发送给接收方的消息体的大小（以字节为单位）。

语法

http

Content-Length: <length>

Specification
HTTP Semantics # field.content-length

This page was last modified on⁨2025年7月4日⁩ byMDN contributors.