since 2000
All about SDEF Files
The SDEF file type is primarily associated with DCS World.
What is an SDEF file?
SDEF files mostly belong to DCS World. Your SDEF file holds internal definitions used in distinct contexts.
Sound Definition (DCS World)
This file acts as a sound definition for Digital Combat Simulator (DCS) World. It provides data for mapping game events to audio parameters and controls sound playback during simulation. For more details, visit Digital Combat Simulator.
AppleScript Dictionary Definition
Some SDEF files, formatted in XML, serve as dictionary definition files for AppleScript. They list available commands and objects so the AppleScript Editor can interpret and execute scripts. More information is available at Apple Support.
Tip: Use a plain text editor for XML-based SDEF files. Tip: Use the dedicated game or scripting tool for non-XML versions to ensure proper functionality. Tip: Always back up the file before making any changes.
Sound Definition (DCS World)
This file acts as a sound definition for Digital Combat Simulator (DCS) World. It provides data for mapping game events to audio parameters and controls sound playback during simulation. For more details, visit Digital Combat Simulator.
AppleScript Dictionary Definition
Some SDEF files, formatted in XML, serve as dictionary definition files for AppleScript. They list available commands and objects so the AppleScript Editor can interpret and execute scripts. More information is available at Apple Support.
How to open an SDEF file
You need a suitable software like DCS World to open an SDEF 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 SDEF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SDEF file directly in the browser:. Just drag the file onto this browser window and drop it.
Online SDEF Text Viewer
or drag and drop it here
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How to extract texts from SDEF files or capture a screenshot to PDF, JPG, DOCX, TXT, ...
You can extract texts from SDEF file or capture a preview screenshot using our online SDEF file viewer:- To do this, click the button "Choose your .sdef file to view" on this page.
- Your SDEF file will then be displayed in the browser.
- Now click on "Save as..." at the top of the page.
- 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 SDEF files:
- DCS World
See the previous paragraphs to learn more about the main application. SDEF files are often referred to as DCS World games because this type of file is primarily created or used by this software.
- AppleScript Dictionary (Scripting Definition) by Apple Inc.AppleScript is a scripting language devised by Apple Inc., and built into Mac OS. More generally, "AppleScript" is the word used to designate the Mac OS scripting interface, which is meant to operate in parallel with the graphical user interface. The identifying characters used for this association are - Hex: 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 2E 30 22 20 65 6E 63 6F 64 69 6E 67 3D 22 55 54 46 2D 38 22 3F 3E 0A 3C 21 44 4F 43 54 59 50 45 20 64 69 63 74 69 6F 6E 61 72 79 20 53 59 53 54 45 4D 20 22 66 69 6C 65 3A 2F 2F 6C 6F 63 61 6C 68 6F 73 74 2F 53 79 73 74 65 6D 2F 4C 69 62 72 61 72 79 2F 44 54 44 73 2F 73 64 65 66 2E 64 74 64 22 3E 0A, ASCII: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE dictionary SYSTEM "file://localhost/System/Library/DTDs/sdef.dtd"> . This file format is classified as Source Code.
Technical Data for SDEF File Extension
File classification:
Game
Identifier:
Hex: 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 2E 30 22 20 65 6E 63 6F 64 69 6E 67 3D 22 55 54 46 2D 38 22 3F 3E 0A 3C 21 44 4F 43 54 59 50 45 20 64 69 63 74 69 6F 6E 61 72 79 20 53 59 53 54 45 4D 20 22 66 69 6C 65 3A 2F 2F 6C 6F 63 61 6C 68 6F 73 74 2F 53 79 73 74 65 6D 2F 4C 69 62 72 61 72 79 2F 44 54 44 73 2F 73 64 65 66 2E 64 74 64 22 3E 0A, ASCII: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE dictionary SYSTEM "file://localhost/System/Library/DTDs/sdef.dtd"> (provided by TrID database)
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: Dictionaries.SystemDictionary
EXEFile: %ProgramFiles%\LogoMedia\Dictionaries\LogoMedia Dictionaries.exe %1
EXEFile: %ProgramFiles%\LogoMedia\Dictionaries\LogoMedia Dictionaries.exe %1
an sdef definition file is a special file format and should only be edited and saved with the appropriate software.
How to solve problems with SDEF files
- Associate the SDEF file extension with the correct application.
- Update your software that should actually open definition files. Because only the current version supports the latest SDEF file format. Search, therefore, e.g. on the manufacturer website after an available DCS World update.
- To make sure that your SDEF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .SDEF file online - secure, fast, and no downloads needed.