Document Revision History

This table describes the changes to Uniform Type Identifiers Overview.

DateNotes
2015-10-21

Clarified conformance requirements for custom UTIs.

2009-11-17

Extracted table of system-defined UTIs.

2009-09-09

Added information about how UTIs are utilized in Mac OS v10.5, Mac OS v10.6, and iOS.

2008-04-08

Added information about the UTI character set.

2007-10-31

Made minor technical and editorial corrections.

2005-11-09

Fixed typographical errors. Clarified usage of UTTypeConformsTo. Added public.archive to "conforms to" list for com.pkware.zip-archive.

2005-06-04

Updated list of system and imported UTIs. Made corrections and updates for OS X v10.4, including additional conformance information.

2005-04-29

Changed title from "Understanding Uniform Type Identifiers." First public version.

2004-06-28

First seed release.