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OpenType® Specification Version 1.9

  • Article
  • 06/16/2022
  • 2 minutes to read

In this article

Core specification

  • OpenType overview
  • The OpenType font file
  • Font file tables
  • Advanced typographic extensions (OpenType layout)
  • OpenType layout common table formats
  • OpenType font variations overview
  • OpenType font variations common table formats

Errata

  • OpenType 1.9 errata

Appendices

  • Recommendations
  • OpenType Layout Tag Registry
  • OpenType Design-Variation Axis Tag Registry
  • TrueType outlines and instructions
    • TrueType fundamentals
    • Instructing TrueType Glyphs
    • The TrueType Instruction Set
    • Graphics State Summary
  • OpenType Mirroring Pairs list
  • Adobe technical note #5176: “The Compact Font Format Specification”
  • Adobe technical note #5177: “Type 2 Charstring Format”
  • The CFF 2 Charstring Format
  • Adobe Technical Note #5902: “PostScript Name Generation for Variation Fonts”
  • Specification changes log file

OpenType 1.9 incorporates revisions in Draft Amendment 2 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.

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  • © Microsoft 2023

Additional resources

In this article

  • Previous Versions
  • Blog
  • Contribute
  • Privacy
  • Terms of Use
  • Trademarks
  • © Microsoft 2023