Accept-Encoding

Lists content codings a client can decode.

Use Accept-Encoding to negotiate gzip, br, or another supported coding. Send Vary: Accept-Encoding when the response changes by coding.

httpheadercompressioncache

Reference (http)

Accept-Encoding: br, gzip

Use Accept-Encoding to negotiate gzip, br, or another supported coding. Send Vary: Accept-Encoding when the response changes by coding.

Common mistakes

Sending a coding the client did not advertise or forgetting that identity is the fallback.

IANA registry: http-fields/field-names

Sources