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 |
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 |
Content-Length: <length>
The length in decimal number of octets.
| Specification |
|---|
| HTTP Semantics # field.content-length |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
Content-Length |
Yes |
12 |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
cors_response_safelist |
76 |
≤79 |
87 |
No |
63 |
12.1 |
76 |
76 |
87 |
54 |
12.2 |
12.0 |
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Length