OpenType specification

The OpenType™ specification has been formatted in HTML, but may link to .PDF or document in Microsoft Word format.

OpenType specification version 1.8.2



OpenType 1.8.2 incorporates revisions in Amendment 1 and Draft Amendment 2 of the ISO/IEC 14496-22:2015 “Open Font Format (3rd edition)” standard. Additionally, it incorporates extensions not included in ISO/IEC 14496-22:2015 plus Amendments 1 and 2, including the 'MERG', 'meta' and 'sbix' tables, and all of the addtions related to OpenType Font Variations. Current editions and amendments of ISO/IEC 14496-22 are freely available for download from the ISO website.

Updates to this specification are noted in the change log.

This page was last updated 20 July 2017.

© 2017 Microsoft Corporation. All rights reserved. Terms of use.

Comments to the MST group: how to contact us.