OpenType specification (OpenType 1.4)

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

OpenType specification version 1.4

self extracting archive [about 1.5Mb]

• OpenType overview
• The OpenType font file
• Font file tables
• Recommendations

Appendices

• Advanced typographic extensions (OpenType Layout)
• OpenType Layout Common Table Formats
• OpenType Layout Tag Registry
• The WGL4.0 character set
• TrueType fundamentals
• The TrueType instruction set
• Adobe technical note #5176: "The Compact Font Format Specification."
• Adobe technical note #5177: "Type 2 Charstring Format."
• Specification changes log file

OpenType version 1.4 has been contributed to ISO and became the foundation for the development of ISO/IEC 14496-22 “Open Font Format” standard. The standard was published in 2007, and is now freely available for download from ITTF website.