There are three different file types that use the UDF file extension, Universal Disk Format, Excel User Defined Function, and Rioch Address Book files. Universal Disk Format is a common file system used by disk burning programs to store files on disks, some may use the UDF extension, although others use the UDF standard while using a proprietary file extension.
Excel User Defined Function files contain predefined functions that are executed when opened. Care should be taken with this type of file as the contents of the file could be malicious, especially if it’s from an untrusted source. The Rioch Address Book format is used to store contact details such as email addresses and is designed for use on Rioch printers.
How can you open UDF files?
Most unzipping tools should be able to open Universal Disk Format files, and file converters exist for video and disk image formats.Excel User Defined Functions are exclusively supported by Microsoft’s proprietary spreadsheet software. Rioch Address Book files are designed for use on Rioch printers, Rioch also has one current and one unsupported piece of proprietary software that can open UDF files or export them to a CSV format.
What programs work with UDF files?
Disk burning software Nero and unzipping tools such as 7-zip can open Universal Disk Format files. Video File converters or DVD ripping software may be able to convert UDF files into ISO or video formats such as MP4 files depending on the content in the UDF file. Excel User Defined functions are only supported in Microsoft Excel, other spreadsheet software such as LibreOffice Calculator cannot open these files. The now unsupported software “SmartDeviceMonitor for Admin” used to be required to open Rioch Address Book files, the replacement software “Device Manager NX Lite” can open or convert UDF files into CSV format.