File Extension Library


.TDF File Extension

  • Developer by: 321 Studios
  • Category: Settings Files

What is an .TDF file?

.TDF file extension is created by 321 Studios. .TDF has been classified as Settings Files.

.TDF is Title Definition Format File

Contains setup instructions for backing up DVD movies; used by DVD X software such as DVD-X Copy, DVD X Platinum, and DVD X Copy Express; may be used to modify and fix DVD authoring problems and incorrect titleset selections made by the DVD X software.

321 Studios has ceased operations for legal reasons.

File Type 2:

Guide Text Definition File

Developer by: Project Pluto Category: Text Files

Contains definitions of datasets used by a Guide, a star charting and desktop planetarium program; may be included on the application CD or saved on the hard disk during a program installation.

Text definition files can be modified in a text editor.

File Type 3:

Xserve Test Definition File

Developer by: Apple Category: Text Files

Stores test instructions and parameters for system tests run by Xserve Remote Diagnostics; used for testing the performance of components in an Apple Xserve server computer; can be edited in a text editor.

How to Open .TDF file on different platforms

Open .TDF File on Windows

  • Right-click a .TDF
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .TDF file and Select check box "Always use this app to open .TDF files" Press "Ok"

Open .TDF File on Mac

  • Right-click (or Ctrl + Left-click) the .TDF file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .TDF File on Linux

Right click on the .TDF file, choose "Open with" and select a program from the list above

Open .TDF File on iPhone

Select a file. If you don't see an application to open the .TDF file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .TDF File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .TDF files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .TDF files

  1. You need to update the application that you normally use to open .TDF files. Only the latest version of the software supports the current .TDF file format
  2. You need to check the .TDF file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)