DF1 file format description

Many people share .df1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .df1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .df1 files.

1 filename extension(s) found in our database.

.df1 - Omnis Native Data File

The DF1 development files are related to Omnis Studio. The DF1 file is an Omnis Native Data File. Omnis Studio is a rapid application development (RAD) tool that allows programmers and application developers to create enterprise, web, and mobile applications for Windows, Linux, and Mac OS X personal computers and servers across all business sectors.

Omnis Studio
Development files
- / -
df2, df3
Omnis Native Data File related extensions:
Jeroo Source Code
AfterGRASP Compiled Script
Zope Toolkit Data
Linux Perf Data
Package Resource Index Data
Extensible Data Format File

Naturally, other applications may also use the .df1 file extension. Even harmful programs can create .df1 files. Be especially cautious with .df1 files coming from an unknown source!

Can't open a .df1 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 can't open this file:


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 one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .df1 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cf1, d1, db1, dc1, df, dfl, dfq, dfw, dg1, dr1, dt1, dv1, fd1, ff1, rf1

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Tekla Structures Model
DTED Level 1 Data
qs-STAT Q-DAS Shared Data File
Stalker Game Data
Lightscape Parameter File
SmartWare Spreadsheet Runtime Project

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .df1 file format, then write to us!

DataTypes.net >> DF1 file