field Registered
Verified 2026-09-18 · registry updated
2026-08-28Content-Type
Describes the media type of a request or response body.
Set Content-Type accurately, including a charset where needed. Servers should validate request types instead of parsing whatever bytes arrive.
httpheadercontent
Reference (http)
Content-Type: application/json; charset=utf-8
Set Content-Type accurately, including a charset where needed. Servers should validate request types instead of parsing whatever bytes arrive.
Common mistakes
- Relying on MIME sniffing or using application/json for a body that is not JSON.
IANA registry: http-fields/field-names
Registry reference: RFC 9110, Section 8.3: HTTP Semantics