Format

TrueType Font

Summary

Name

TrueType Font

Identifiers

• MIME: font/ttf
• PUID: x-fmt/453

Format type

Font

Disclosure

Full

Description

Created by Apple, TrueType Font files are a sequence of concatenated tables (a table is a sequence of words; each table must be long aligned and padded with zeroes if necessary). The first of the tables is the font directory, a special table that facilitates access to the other tables in the font. The directory is followed by a sequence of tables containing the font data. These tables can appear in any order. Certain tables are required for all fonts. Others are optional depending upon the functionality expected of a particular font. The tables have names known as tags. Tags have the type uint32. Currently defined tag names consist of four characters. Tag names with less than four characters have trailing spaces. When tag names are shown in text they are enclosed in straight quotes. Tables that are required must appear in any valid TrueType font file. Also notable is that Apple makes a distinction between a "TrueType font" (which refers to a particular font outline definition technology) and an "sfnt-housed font," which refers to any font which uses the same packaging format as a TrueType font: that is, it uses the same directory structure and the same table format and meaning for any tables present.

Release date

18 Dec 2003

Format encoding

Binary

File extensions

ttf

Submitted by

The National Archives and Records Administration / The National Archives and Records Administration

Developed by

Apple Computer, Inc.

Supported by

Apple Computer, Inc.

Relationships

Has lower priority than

• Acrobat PDF 1.0 - Portable Document Format 1.0
• Acrobat PDF 1.1 - Portable Document Format 1.1
• Acrobat PDF 1.2 - Portable Document Format 1.2
• Acrobat PDF 1.3 - Portable Document Format 1.3
• Acrobat PDF 1.4 - Portable Document Format 1.4
• Acrobat PDF 1.5 - Portable Document Format 1.5
• Acrobat PDF 1.6 - Portable Document Format 1.6
• Acrobat PDF/A - Portable Document Format 1a
• Acrobat PDF/X - Portable Document Format - Exchange 1:1999
• Acrobat PDF/X - Portable Document Format - Exchange 1:2001
• Acrobat PDF/X - Portable Document Format - Exchange 1a:2003
• Acrobat PDF/X - Portable Document Format - Exchange 2:2003
• Acrobat PDF/X - Portable Document Format - Exchange 3:2003
• Acrobat PDF/X - Portable Document Format - Exchange 1a:2001
• Acrobat PDF/X - Portable Document Format - Exchange 3:2002
• Acrobat PDF 1.7 - Portable Document Format 1.7
• Acrobat PDF/A - Portable Document Format 1b
• Acrobat PDF/A - Portable Document Format 2a
• Acrobat PDF/A - Portable Document Format 2b
• Acrobat PDF/A - Portable Document Format 2u
• Acrobat PDF/A - Portable Document Format 3a
• Acrobat PDF/A - Portable Document Format 3b
• Acrobat PDF/A - Portable Document Format 3u
• Acrobat PDF/X - Portable Document Format - Exchange PDF/X-4
• Acrobat PDF/X - Portable Document Format - Exchange PDF/X-4p
• Acrobat PDF/X - Portable Document Format - Exchange PDF/X-5g
• Acrobat PDF/X - Portable Document Format - Exchange PDF/X-5pg
• Acrobat PDF/X - Portable Document Format - Exchange PDF/X-5n
• Acrobat PDF/E - Portable Document Format for Engineering PDF/E-1
• Web Open Font Format 1.0

Internal signatures

Changelog

• V94

  Release date

  17 September 2018

  • Updated

    TrueType Font: Amended Media Type from incorrect application/octet-stream to font/tff. Added format classification 'Font'.

• V67

  Release date

  26 February 2013

  • Updated

    TrueType Font: Improved signature through PRONOM Research.

• V62

  Release date

  28 August 2012

  • Updated

    True Type Font: Description information submitted by the National Archives and Records Administration.

• V60

  Release date

  11 June 2012

  • Updated

    TrueType Font: Existing signature refined through PRONOM Research.