.UDF File Extension

Universal Disk Format File

Developer Optical Storage Technology Association
3.3  |  37 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.

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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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Microsoft Excel User-defined Function

Developer Microsoft
3.3  |  14 Votes

User-defined script written or recorded in Visual Basic that executes a function in Microsoft Excel; can be created by selecting "Module" from the Insert menu in Excel.

Programs that open UDF files

No longer supported by Microsoft Excel
No longer supported by Microsoft Excel

UYAP Document Format

Developer Turkish Republic Ministry of Justice
2.0  |  1 Vote

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.

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Screenshot of a .udf file in UYAP Doküman Editörü 5
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 (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:

  • .PDF - Portable Document Format
  • .ODT - OpenDocument Text Document
  • .TXT - Plain Text
  • .XML - Extensible Markup Language
  • .JPG - JPEG Image
  • .PNG - Portable Network Graphic

Programs that open UDF files

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