UML File Extension
UML Data Object Model
- File Type uml
- Popularity
- Application Visual UML
- Category Document Files
- Format XML
What is a UML file?
Files with the UML extension are specifically tied to UML Data Object Model, a Document Files type, and there are 969 files in this category.
UML files are compatible with various operating systems, including Windows. When working with UML files, you can rely on 5 programs, including Visual UML, Eclipse IDE and MagicDraw.
Programs that support UML files
How to open a UML file?
If you can’t open a UML file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
Visual UML, Eclipse IDE and MagicDraw are among the most widely used programs for handling UML files. To install the most up-to-date edition of Visual UML, visit the official VOM website. You can download the build that works across all operating systems.
After installing, your OS should instantly open UML files with Visual UML.
Setting Visual UML as default UML viewer
Change the default app for a file type in Mac
- Initiate a right click or use Control + left click on the desired UML file to open a menu where you can select various actions;
- Choose "Open in Application" and click "Other";
- Look towards the bottom of the window, where you will find the "Enable" menu. "Recommended programs" will be the default selection;
- Choose "All Programs" in this menu and search for Visual UML. Check the box next to "Always open in app" to set it as the default option.
Change default programs in Windows
- Take the first step by right-clicking on your UML file. Next, select "Open With" and then choose "Choose another app" from the available options;
- Choose Visual UML from the available applications listed in the pop-up window to set it as the default application to open your UML file;
- Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.
How to edit a UML file?
To modify UML files, it is necessary to install dedicated software that lets you open and edit document files. Online UML editors generally offer fewer tools compared to programs designed for UML Data Object Model.
Best UML editors 2026
Based on the specified criteria, here is a list of UML editors that may fit your requirements.
| UML Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Visual UML | VOM | Windows | 4.7 out of 5 (39 reviews) |
| MagicDraw | No Magic | Windows | 4.6 out of 5 (34 reviews) |
| Eclipse IDE | Eclipse | Windows | 4.3 out of 5 (38 reviews) |
Convert files to and from UML
When a UML file is not easy to work with, converting it to formats like JPG, JPEG, PDF or other comparable types may help.
It is important to understand that converting a UML file might limit certain functions, but this conversion is usually reversible.
Convert UML to other file formats
Tips and tricks to solve problems with UML files
Problematic UML files can usually be resolved by making small changes in your software. See the tips below to help fix common issues.
Are there any techniques or tools available to repair a damaged UML file?
In a data recovery program, open the damaged UML file and select the "Repair" menu option. Wait for the recovery process to finish as it will automatically restore the damaged document files.
How do I know if my UML file has been damaged?
The signs of corrupted UML document files can manifest as:
- Error alerts occur when actions are performed on the file;
- The file shows slow performance when edited in Visual UML;
- The file encounters problems during the opening process or shows error indications;
- An unexplained increase in the size of the UML file;
- The file causes Visual UML or other software to hang or crash during various operations;
What factors contribute to Visual UML crash?
Lack of software updates is a possible reason behind Visual UML crash. Keep your VOM products up to date by installing the latest updates.
Restarting your computer is an essential troubleshooting step that can resolve many common problems. It is recommended to restart your computer before making any changes to the software settings.