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.
Windows can't open this file: File: example.otf To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.
There are 2 other file types using
the OTF file extension!
.otf - OpenOffice OpenDocument formula template
.otf - DeltaVision image
Software that open otf file
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File type specification:
otf file 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:
application/vnd.oasis.opendocument.formula-template
application/x-vnd.oasis.opendocument.formula-template
Updated: February 8, 2019
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.
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.
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.
Many programs support fonts in OpenType font format.
Use any font editing tool to export *.otf fonts to other font formats.
HEX code: 4F 54 54 4F 00
ASCII code: OTTO
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 File-Extensions.org's database).
Hint:
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.
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.
Main software associated with otf file by default:
FontCreator
Other suggested software:
TypeTool
Fontographer
Main software associated with otf file by default:
TypeTool for Mac
Other suggested software:
Fontographer for Mac
Main software associated with otf file by default:
FontLab Studio
Other suggested software:
DTL OTMaster
After I unzipped the downloaded TruType Font .zip folder and tried to install the .ttf fonts in Windows 10 Pro 64-bit on my Surface Pro 3, I got “Cannot install [file-name]. The requested file [font location] is not a valid font file.” error message and there was no Install option if I right-clicked it or through Control Panel. The file was not corrupted and I did that by the built-in Administrator account and also ran into the same problem. How can I fix it?
A few people can not add or install any new fonts in Windows 10 and get the “not a valid font” message while attempting to install a TTF or OTF file, even can not preview the fonts. Here ae some tips to get rid of that.
* You can not get it working from a network location or from within a .zip file, because the new levels of security just prevents it. You should move the file onto your local driver or move it to your desktop and right click the file.
Disabling the Windows Firewall service always blocks the installtion of font file, so you need to turn on “windows firewall” feature.
* Hold down Win + X keys or right click on the Start menu, select Control Panel.
* Go to System and Security > Windows Firewall.
* Check Turn on Windows Firewall for both the private and public network setting, and click Apply > Ok button.
If you are unable to get the Install New Fonts option from the file menu, try the simple solution below:
* Within the File Explorer, double click individual font file to open it up.
* There will be two buttons and one check box at the top of the font file, including Print, Install, and Use Shortcut.
* Click on Install button to install the font to the computer, or check Use Shortcut box to creat a reference to the physical file and install it.
* If there are 10 font files, repeat the above step until all of them are installed. Finally open the Control Panel to verify if the new fonts are there.