topic Registered
Verified 2026-09-19 · registry updated 2025-10-02

HTTP registry: deflate

"deflate" compressed data () inside the "zlib" data format ()

HTTP parameter values extend negotiation, framing, preferences, range handling, or other protocol components. deflate is registered in HTTP Content Coding Registry. Defining reference: rfc9110.

httpregistryhttp-parameterscontent-coding

Identifier (http)

deflate

"deflate" compressed data () inside the "zlib" data format ()

Interpret parameters only in the context that defines them; unknown parameters must not silently change security or framing behavior.

This registry value is currently marked active by IANA. Follow the defining specification before sending, accepting, or proxying it.

IANA registry: http-parameters/content-coding

Registry reference: rfc9110

Permalink: https://merginit.com/reference/http/registry/http-parameters/content-coding/deflate-112