UMLF file format description

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

1 filename extension(s) found in our database.

.umlf - StarUML UML Fragment Data

The UMLF development files are related to StarUML. The UMLF file is a StarUML UML Fragment Data. StarUML is a tool to create class diagrams and other types of diagrams in the Unified Modeling Language (UML).

Development files
- / -
StarUML UML Fragment Data related extensions:
StarUML Project File
StarUML v1 Model Data
StarUML UML Project

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

Can't open a .umlf 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 .umlf file extension is often given incorrectly!

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

mlf, ulf, umf, uml

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

StarUML v1 Model Data
UMX Language File
Visual UML Model Data
Universal List File
FlashFXP User Language Data
Media Holder Universal Media Format

Operating systems 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 .umlf file format, then write to us! >> UMLF file