Content-Encoding

Describes content codings applied to a representation.

Content-Encoding is different from Transfer-Encoding: it describes representation compression such as br or gzip.

httpheadercompression

Reference (http)

Content-Encoding: br
Vary: Accept-Encoding

Content-Encoding is different from Transfer-Encoding: it describes representation compression such as br or gzip.

Common mistakes

Hashing or signing compressed bytes when the protocol contract expects the selected representation.

IANA registry: http-fields/field-names

Sources