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

HTTP registry: gzip

GZIP file format

HTTP parameter values extend negotiation, framing, preferences, range handling, or other protocol components. gzip is registered in HTTP Transfer Coding Registry. Defining reference: rfc9112.

httpregistryhttp-parameterstransfer-coding

Identifier (http)

gzip

GZIP file 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/transfer-coding

Registry reference: rfc9112

Permalink: https://merginit.com/reference/http/registry/http-parameters/transfer-coding/gzip-123