field Registered
Verified 2026-09-18 · registry updated
2026-08-28Preference-Applied
Reports which Prefer request preference the server applied.
Use Preference-Applied to make an optional behavior explicit when the response would otherwise be ambiguous.
httpheaderapi
Reference (http)
Preference-Applied: return=minimal
Use Preference-Applied to make an optional behavior explicit when the response would otherwise be ambiguous.
Common mistakes
- Returning it for a preference that was ignored or only partially applied.
IANA registry: http-fields/field-names
Registry reference: RFC 7240: Prefer Header for HTTP