RFC 7049 · PROPOSED STANDARD · 2013

Concise Binary Object Representation

Overview

RFC 7049, “Concise Binary Object Representation”, is a Proposed Standard document published in October 2013 by C. Bormann, P. Hoffman. It has been obsoleted by RFC 8949 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

The Concise Binary Object Representation (CBOR) is a data format whose design goals include the possibility of extremely small code size, fairly small message size, and extensibility without the need for version negotiation. These design goals make it different from earlier binary serializations such as ASN.1 and MessagePack.

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 7049 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
Obsoleted by
RFC 8949
Other RFCs from 2013

Who Is Online

In total there are 55 users online: 0 registered, 50 guests and 5 bots.

Most users ever online was 1,226 on 13 Jun 2026, 3:56 am.

Bots: AhrefsBot Applebot Other Bot SemrushBot Sogou

Users active in the past 15 minutes. Total registered members: 354