Files with otf file extension can be most typically encountered as fonts saved in the OpenType font format which has been developed by Microsoft and Adobe.

There are 2 other file types using
the OTF file extension!

otf icon.otf - OpenOffice OpenDocument formula template

empty icon.otf - DeltaVision image

Detailed description

Software that open otf file

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OTF file extension - OpenType font file format

What is otf file? How to open otf files?

File type specification:

Font and typeface file type icon Font and typeface file type

otf file icon: otf filetype icon

The otf file extension is best known for its use for OpenType font format, a scalable format for computer fonts, initially developed by Microsoft, later joined by Adobe Systems.

OpenType was first announced in 1996, with a significant number of OpenType fonts starting to ship in 2000–2001. Adobe completed conversion of its entire font library to OpenType around the end of 2002.

A computer font (or font) is a file format used to store a set of glyphs, characters, or symbols such as dingbats.

OpenType is supported in both Microsoft Windows and macOS / OS X.

MIME types used:


Updated: April 17, 2024

The default software associated to open otf file:

FontCreator picture or screenshot

FontCreator  Microsoft Windows software

Company or developer:
High-Logic B.V.

FontCreator is one of the most popular font editing software. It has an intuitive interface that allows beginners to become productive immediately and it contains the powerful drawing tools that font designers require to create and edit high-quality TrueType and OpenType fonts.

FontLab Ltd. logoTypeTool for Mac  Apple macOS / Mac OS X software

Company or developer:
FontLab Ltd.

TypeTool is a basic font editor for Mac OS and for Windows. For students, hobby typographers and creative professionals who occasionally need to create or customize fonts.

FontLab Studio picture or screenshot

FontLab Ltd. logoFontLab Studio  Multiplatform software

Company or developer:
FontLab Ltd.

FontLab Studio is font editor for Mac and Windows. It is the comprehensive solution for font foundries, professional type designers, typographers and graphic design studios, allowing them to design typefaces and create or modify fonts.

Related articles:

How to install new fonts in Windows

How to install new fonts in Mac OS X

How to install new fonts in Linux

Help how to open:

Many programs support fonts in OpenType font format.

How to convert:

Use any font editing tool to export *.otf fonts to other font formats.

Find conversions from otf file:

otf to bdf

otf to jpeg

otf to pdf

otf to ttf

otf to vf3

otf to woff

otf to woff2

Find converter to otf file type:

fog to otf

pfb to otf

png to otf

svg to otf

ttc to otf

ttf to otf

woff to otf

File identification strings:

HEX code: 4F 54 54 4F 00

List of software applications associated to the .otf file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open otf file, edit otf file, convert otf file, view otf file, play otf file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting otf files.

Software that open otf file - OpenType font file format

Programs supporting the exension otf on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open otf file action.

Microsoft Windows:

Main software associated with otf file by default:
Other suggested software:

Apple macOS / Mac OS X:

Main software associated with otf file by default:
TypeTool for Mac
Other suggested software:
Fontographer for Mac small icon Fontographer for Mac


Main software associated with otf file by default:
FontLab Studio
Other suggested software:
DTL OTMaster

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