UMF File Extension

MediaHolder Universal Media Format

File Type umf
Developer GetMediaHolder
Popularity
4.9 (34 votes)
Application Sublime Text
Category Data Files
Format Binary

What is a UMF file?

The UMF extension is related to MediaHolder Universal Media Format and is classified in the Data Files category, which contains 6196 files.

UMF file support extends to various operating systems, including Windows, Linux and Mac OS. There are 4 programs available to open a UMF file, including popular tools like Sublime Text, Atom and PSPad.

Windows

Mac OS

Linux

How to open a UMF file?

If you are having trouble opening a UMF file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

Thanks to their popularity, Sublime Text, Atom and PSPad are often the go-to programs for managing UMF files. If you want the most recent release of Sublime Text, head over to the Sublime HQ Pty site and download the version designed to run on all platforms.

After completing the installation, UMF files should be recognized by the system and linked to Sublime Text.

Set Sublime Text as your default UMF viewer

Set default app to open files on Mac

Right-click or Control + left-click on the desired UMF file to open a menu of available actions;
Choose "Open in Application" and click "Other";
In the lower section of the window, you’ll find the "Enable" menu, with "Recommended Programs" pre-selected as the default option;
Select "All Programs" in this menu, and then search for Sublime Text. Check the box next to "Always open in app" to make sure it’s the default option.

Change a default app in Windows

To get started, right-click your UMF file, then choose "Open With" and select "Choose Another Application" from the context menu;
From the list of applications in the pop-up window, find and select Sublime Text as your desired application;
Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening UMF files.

Solving Common UMF File Challenges

While UMF files can sometimes present difficulties, most problems can be resolved quickly with minor software modifications. Check the tips below to help solve them.

What Causes Sublime Text to Crash Frequently?

Insufficient software updates are a likely cause of Sublime Text crashes. Be sure to install the latest updates for Sublime HQ Pty products.

A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.

How can I restore a damaged UMF file?

Start a data recovery program and open the damaged UMF file. Then, choose the "Repair" option from the menu. Allow the recovery process to complete, which will automatically repair the damaged data files.

How can I determine if my UMF file is damaged?

Characteristics of corrupted UMF data files can include:

Sublime Text or other programs stop responding or crash when trying to handle the file;
Error notifications appear during file manipulation;
When opening the file, errors occur or the inability to access its contents;
Unexplained UMF file size inflation;
Editing the archive in Sublime Text is hampered by poor overall performance;

How to edit a UMF file?

To modify UMF files, you need to install special software that makes it possible to open and edit data files. Online UMF editors are more restricted compared to software designed for MediaHolder Universal Media Format.

Best UMF Editor Software in 2026

Taking the above factors into account, we have selected a list of UMF editors currently available.

UMF Editor Software	Developer	Platforms	Overall Rating
PSPad	Jan Fiala	Windows	4.7 out of 5 (41 review)
Notepad++	Notepad++ Team	Windows	4.6 out of 5 (37 reviews)
Sublime Text	Sublime HQ Pty	Windows, Mac OS, Linux	4.6 out of 5 (39 reviews)
Atom	-	Windows, Mac OS, Linux	4.1 out of 5 (36 reviews)

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