Opening a UDF File

The UDF file type is primarily associated with Nero.

UDF	File extension: UDF
	File type:	disk file system

What is a UDF file?

UDF files mostly belong to Nero by Nero. UDF (short for Universal Disk Format) is a file system which defines the structure of files and folders in read-only and rewritable optical disc media/formats (e.g. DVD, CD, and Blu-ray Discs). Disk images containing a UDF file system are usually saved in ISO format. Excel uses a UDF file to store a user-defined function script for an SQL Server database. A different UDF file contains a backup of satellite TV channels used by GTMedia V9. Device Manager NX Lite uses a UDF file to save address books of networked printers. Philips x-ray machines save x-ray diffraction information in UDF files.

How to open UDF files

You need a suitable software like Nero to open a UDF file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your UDF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a UDF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online UDF File Viewer

Choose your .udf file to view

or drag and drop it here

Online File Viewer

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How to extract texts from UDF files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

If you want to extract texts from UDF file or capture a screenshot, you can use our free Online UDF File Viewer:

To do this, click the button "Choose your .udf file to view" on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Your file will be converted and downloaded.

Programs that open and convert UDF files:

Nero by Nero
See the previous paragraphs to learn more about the main application. UDF files are often referred to as Nero disk images because this type of file is primarily created or used by this software.
DASH (x-ray diffraction data) by CCDC
DASH is an interactive program which solves crystal structures from powder diffraction data. It can import and use x-ray powder diffraction data saved in a UDF file. This file format is classified as Data.
Device Manager NX Lite (address book) by Ricoh
Device Manager NX Lite is a computer application used to configure and manage up to 250 networked printers and multifunction devices manufactured by Ricoh. It uses a UDF file to store an address book of all devices on the network. This file format is classified as Database.
Excel (user-defined function) by Microsoft
Excel is a cross-platform spreadsheet processor bundled with Office productivity software suite. Some versions of this program save user-defined function scripts in UDF files. This file format is classified as Executable.
GTMedia V9 (satellite TV channels backup) by Freesat
GTMedia V9 is a subscription-free satellite TV receiver. It uses a UDF file to export or import a backup of its TV channels, user database, satellite list, and providers. This file format is classified as Backup.
Photostyler (image filter) by Aldus
Photo-styler is a discontinued photo editor and graphics design program. A photo filter used by this program is saved in a UDF file. This file format is classified as Raster Image.
Uyap Dokuman Editoru (document) by Türkiye Barolar Birli
Uyap Dokuman Editoru is a discontinued document editing and signing program. A document created with this program is saved in a ZIP-compressed UDF file. This file format is classified as Compressed.
Windows XP (uniqueness database) by Microsoft
Windows XP is a discontinued edition of Windows operating system. Users with administrator accounts on Windows XP were allowed to store a uniqueness database in a UDF file which is used in conjunction with an answer file to provide system setup configuration or perform unattended installations. This file format is classified as Database.

UDF file format:

A file format defines how the data in the file is structured. The file format can be determined based on the file extension and the signature (the first few characters of a file). Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. If there are problems opening a file, you must first determine the file format used. Below you will find our evaluation of the UDF files:

UDF is a very commonly used file extension and includes different formats for different programs. However, the following two file formats are common:

65% of all UDF files use ZIP compression, so multiple files are compressed and stored together in one UDF file. Such a ZIP file contains 2 to 3 files. Customary file names are content.xml, documentproperties.xml and sign.sgn. Tip: If you rename the file ending to .zip and then double-click it, you see the included files and images. UDF files can be up to 3 MB in size, but are often around 3 KB - 22 KB. The following keywords are characteristic: documentproperties.xmle. These files are often associated with evrak, karar, dosya, gerek, gerekc, istinaf, raporu, dilek, resmi and adli.
15% of all UDF files start with the bytes üÀÿ, which are crucial for this file format. These files are binary files, so they do not contain text, but only cryptic characters. The files are often between 520 KB and 1 MB in size. The file name V8Finder_Meter.udf or V9Super_userdb.udf is characteristic of these files. Such files are related to finder, meter, userdb, super, lista and gtmedia.

The remaining 20% of all UDF files are files with no common format, the following 8 formats can be found: X-ray diffraction data file format, UCS and USTR. Tagged as addr, ricoh, aficio, prime, cevap, yadvisor, floor or hero. If you want to find out which format your UDF file belongs to, just click on the button "Choose your .udf file to view".

Technical Data for UDF File Extension

File classification:

Disk Image

Related files:

vob, bup, eyp, zip, pdf, ifo, udp, exe, iso, ufd, uddf, d_drive, xml, sbm, e_drive, video_ts, sgn, txt, inf, tif, cue, ima

Related links:

Universal Disk Format

Mime type:

text/x-sql, text/plain

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: udffile.7.1
EXEFile: %ProgramFiles%\Microsoft Visual Studio .NET 2003\Common7\IDE\devenv.exe /dde

ProgramID: elby.VCDMount.1
EXEFile: %ProgramFiles%\Elaborate Bytes\VirtualCloneDrive\VCDMount.exe %1

ProgramID: SDDocuments.Chart2dDocument.1
EXEFile: %ProgramFiles%\Accelrys\MS Modeling 3.2\Studio\MatStudio.exe

ProgramID: Bbox.Document
EXEFile: %ProgramFiles%\Bbox\Bbox.exe

Show all 4 listings To Top

a udf disk file system is a special file format by Nero and should only be edited and saved with the appropriate software.

How to solve problems with UDF files

Associate the UDF file extension with the correct application.
Update your software that should actually open disk file systems. Because only the current version supports the latest UDF file format. Search, therefore, e.g. on the Nero manufacturer website after an available Nero update.
To make sure that your UDF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .UDF file online - secure, fast, and no downloads needed.