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

HTTP registry: compress

UNIX "compress" data format [Welch, T., "A Technique for High Performance Data Compression", IEEE Computer 17(6), June 1984.]

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

httpregistryhttp-parameterstransfer-coding

Identifier (http)

compress

UNIX "compress" data format [Welch, T., "A Technique for High Performance Data Compression", IEEE Computer 17(6), June 1984.]

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/compress-121