UDF files exist as 2 different types. Please find information about each of them below.
Type 1: Universal Disk Format File
General Information
| Title | UDF File Extension |
| Extension | .udf |
| Full Form | Universal Disk Format File |
| File Type | Disk Image File |
| Developer | Optical Storage Technology Association (OSTA) |
| MIME Type | application/octet-stream |
File Function
| Primary Function | Data storage |
| Additional Functions | Data interchange, backup |
| Features | Interoperability, Versatility |
File Characteristics
| Quality | High reliability |
| Supports Layers | Yes |
| Supports Transparency | No |
| Editable | With software |
Use Cases
| Optical Discs | CD, DVD, BD |
| Data Archiving | Yes |
| Multimedia Storage | Yes |
Security and Practices
| Security Risks | Minimal |
| Best Practices | Regular backups, Verify data |
Historical/Version Information
| Initial Release | 1995 |
| Latest Version | UDF 2.60 (2005) |
Associated Types
| Related Formats | .iso, .img, .bin |
Software Compatibility
| Software | Usage Policy | OS Compatibility |
|---|---|---|
 Windows Disk Image Burner |
Free | Windows |
 Nero Burning ROM |
Paid | Windows |
| Roxio Toast |
Paid | Mac |
| IsoBuster |
Free, Paid versions | Windows |
Type 2: Microsoft Excel User-defined Function
General Information
| Title | UDF File Extension |
| Extension | .udf |
| Full Form | User-Defined Function File |
| File Type | Excel Plugin File |
| Developer | Microsoft |
| MIME Type | application/vnd.ms-excel |
File Function
| Primary Function | Store functions |
| Additional Functions | Extend Excel capabilities |
| Features | Custom calculations, Reusable code |
File Characteristics
| Quality | Depends on code |
| Supports Layers | N/A |
| Supports Transparency | N/A |
| Editable | Yes |
Use Cases
| Data Analysis | Yes |
| Reporting | Yes |
| Automation | Yes |
Security and Practices
| Security Risks | Malicious code |
| Best Practices | Code audit, Signed macros |
Historical/Version Information
| Initial Release | 1987 |
| Latest Version | Excel for Microsoft 365 |
Associated Types
| Similar Extensions | .xls, .xlsx, .xlsm, .xlam |
Software Compatibility
| Software | Usage Policy | OS Compatibility |
|---|---|---|
 Microsoft Excel |
Subscription | Windows, Mac |
| Excel Online |
Free, Subscription | Web-based |
| Third-party Add-ins |
Varies | Dependent on add-in |