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UDF File - What is a .udf file and how do I open it?
Learn about .UDF files and view a list of programs that open them.
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Overview
What is a UDF file? File created in the Universal Disk Format (UDF), a disc imaging format used for storing files on optical media; stores a collection of files using the directory structure specified in the UDF standard; can be used for burning DVDs, CDs, and other optical media; allows files to be deleted and modified on the target disc even after they have been written.
More Information The UDF standard is developed and maintained by the Optical Storage Technology Association (OSTA). NOTE: Even though the UDF format is commonly used, the ".udf" extension is not. Instead, disc burning applications typically save images in their own formats and then burn them using the UDF standard.
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DeveloperTurkish Republic Ministry of Justice
Popularity4.0 | 3 Votes
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.UDF File Extension
3 file types use the .udf file extension.
Universal Disk Format File
| Developer | Optical Storage Technology Association |
| Popularity |
3.2 | 38 Votes |
What is a UDF file?
File created in the Universal Disk Format (UDF), a disc imaging format used for storing files on optical media; stores a collection of files using the directory structure specified in the UDF standard; can be used for burning DVDs, CDs, and other optical media; allows files to be deleted and modified on the target disc even after they have been written.
More Information
The UDF standard is developed and maintained by the Optical Storage Technology Association (OSTA).
NOTE: Even though the UDF format is commonly used, the ".udf" extension is not. Instead, disc burning applications typically save images in their own formats and then burn them using the UDF standard.
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Programs that open or reference UDF files
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Program Name
Platform
Reset
X
Windows
Nero 2022
Paid
MagicISO
—
Discontinued
Free Trial
7-Zip
Free
Mac
Roxio Toast 20
Paid
Roxio Popcorn
Paid
Category: Disk Image Files
Updated: November 20, 2012
Microsoft Excel User-defined Function
| Developer | Microsoft |
| Popularity |
3.3 | 15 Votes |
A UDF file may also be a user-defined function written in Visual Basic for Applications (VBA) for use in Microsoft Excel. UDF files allow users to create custom formulas that perform calculations not available through Excel’s built-in functions.
More Information
Advanced Excel users, analysts, and developers who need reusable or specialized calculations are most likely to create user-defined functions. These users often employ the functions in financial modeling, data analysis, and automation scenarios where consistency and repeatability are important.
How to open a UDF file
Older versions of Microsoft Excel supported UDF files. No other program is known to support UDF files.
Programs that open UDF files
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Windows
No longer supported by Microsoft Excel
Mac
No longer supported by Microsoft Excel
Category: Executable Files
Updated: January 29, 2026
UYAP Document Format
| Developer | Turkish Republic Ministry of Justice |
| Popularity |
4.0 | 3 Votes |
A UDF file may also be a document created by UYAP Doküman Editörü, a Turkish word processor . It contains formatted text and may include tables, charts, images, and other document elements in the UYAP Doküman Format (UDF). UDF files may store letters, resumes, invitations, newsletters, and other documents.
More Information
UDF file open in UYAP Doküman Editörü 5
The Turkish Republic Ministry of Justice develops UYAP Doküman Editörü, which is similar to Microsoft Word . The word processor is available for Windows, macOS, Linux, Android, and iOS.
UDF is the primary format in which Doküman Editörü saves documents. UDF consists of a compressed Zip package containing the document's contents, which includes a content.xml file storing the formatting for the document.
How to open a UDF file
You can open a UDF file with UYAP Doküman Editörü (multiplatform). For example, to open a UDF file with the program, select Aç (the folder icon) in the Dosya tab.
How to convert a UDF file
UYAP Doküman Editörü can convert UDF files to various file types, including the following formats:
Programs that open UDF files
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Platform
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Windows
UYAP Doküman Editörü
Free
Mac
UYAP Doküman Editörü
Free
Linux
UYAP Doküman Editörü
Free
iOS
UYAP Doküman Editörü
Free
Android
UYAP Doküman Editörü
Free
Category: Text Files
Updated: January 17, 2024