Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .sdef

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .sdef file?
  • Which program can create the .sdef file?
  • Where can you find a description of the .sdef format?
  • What can convert .sdef files to a different format?
  • Which MIME-type is associated with the .sdef extension?
AppleScript Dictionary Document .sdef file icon

AppleScript Dictionary Document

The SDEF file is an AppleScript Dictionary Document. AppleScript is Apple's powerful and versatile native scripting technology for Mac OS X.
Category: Development files
Application: Mac OS X
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
MS-DOS Batch File
Windows Command File
Unix Shell Script
Mac OS X Installer Package
AppleScript Script
KSH Shell Script
AppleScript Script Bundle
AppleScript Scripting Addition
AppleScript Droplet

Other types of files may also use the .sdef file extension. If you have helpful information about .sdef extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

SmartWare Definition Data
DrumBeat Exported Data
Apple System 7 Control Strip Module
FreeWave Tool Suite Data
IBM SDK for Java System Dump
Encryptafile Signature

The .sdef filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

sdev (1), def (1), sef (1), sdf (1), sde (1), sdff (1)

Can't open a .sdef file?

If you want to open a .sdef file on your computer, you just need to have the appropriate program installed. If the .sdef association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.sdef

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android