UTF-8, a transformation format of ISO 10646

This specification has been revised 2 times since RFC 2044 (1996). Each document below formally obsoleted the one before it; the versions still in force are listed first.

Revision timeline

  1. RFC 2044 (1996)
  2. RFC 2279 (1998)
  3. RFC 3629 (2003)

Current version — implement against this

Superseded versions — historical reference only

This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 3629 (November 2003).