OpenType

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File Format
Name OpenType
Ontology
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.

Contents

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

Specifications

Sample files

Metaformat files

Links

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