OpenType® specification

The OpenType™ specification has been formatted in HTML, but may link to .PDF files.

OpenType specification version 1.8.3

Errata

Appendices

OpenType 1.8.3 incorporates revisions in DIS draft of the 4th edition of the ISO/IEC 14496-22 “Open Font Format” standard. 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.