OFS file extension
The table below provides useful information about the .ofs file extension. It answers questions such as:
- What is the .ofs file?
- What program do I need to open a .ofs file?
- How can the .ofs file be opened, edited or printed?
- How can I convert .ofs files to another format?
Table of Contents
- ✅ Microsoft Outlook Form Storage
- ✅ OptimFROG Dualstream Audio
- 🔄 .ofs file converters
- 🚫 .ofs file related errors
We hope you find this page helpful and a valuable resource!
2 extension(s) and 0 alias(es) found in database
✅ Microsoft Outlook Form Storage

OFS file is an Outlook Form Storage. A form provides an easy way to distribute and collect information.
✅ OptimFROG Dualstream Audio

OFS file is an OptimFROG Dualstream Audio. OptimFROG is a proprietary lossless audio data compression codec developed by Florin Ghido.
Other types of files may also use the .ofs file extension.
🚫 The .ofs file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .ofs file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.ofs
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .ofs file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .ofs file extension, write to us!