OpenType

File Format
Name	OpenType
Ontology	Electronic File Formats Fonts OpenType
Extension(s)	.otf, .ttf
PRONOM	fmt/520

OpenType is an outline font format developed by Microsoft and Adobe. It is the successor to both TrueType and Adobe Type 1 font formats.

Identification

OpenType files containing "CFF data" begin with ASCII "OTTO" (4F 54 54 4F), whereas OpenType files containing TrueType outlines begin with the bytes 00 01 00 00.

See also

• Embedded OpenType
• Open Font Format
• TrueType
• Adobe Type 1

Specifications

• OpenType specification

Sample files

• http://tug.ctan.org/tex-archive/fonts/cm-unicode/fonts/otf/
• dexvert samples — font/otf

Metaformat files

• Synalysis grammar file (for Hexinator / Synalize It!; more details)

Links

• Wikipedia article
• Adobe's OpenType FAQ