Extract text from DUN files
To convert your DUN file to another format, you need Dungeon Defenders or other Game software.
To convert other file formats to the "Map & Save Data" file type, you need software like Dungeon Defenders or a similar tool.
The .DUN file extension serves two distinct, incompatible purposes, causing frequent confusion. Its most common modern use is in the Dungeon Defenders video game series by Trendy Entertainment. In this context, the file acts as a binary container for game maps, hero data, or saved game states. These files are proprietary and compiled specifically for the Unreal Engine, meaning they cannot be opened by standard image viewers or text editors. A 100MB .DUN file is likely a map package, while smaller KB-sized files often hold character stats.
Alternatively, if you are recovering data from the 1990s, a .DUN file is a Dial-Up Networking export from Microsoft Windows (95/98 era). These legacy files store ISP connection settings (phone numbers, IP protocols) in an INI-like text structure.
Practical Constraints:
Users often attempt to convert game .DUN files to JPG or PDF to view maps, but this is impossible without rendering the data inside the game engine or a dedicated modding tool like the Dungeon Defenders Development Kit. For legacy Dial-Up files, the best conversion target is TXT, allowing you to read the configuration data in Notepad.
Convert.Guru analyzes your DUN file, detects the exact format, and lets you read the text inside.
Users also converted HDC, ENGB and SGO files.
If you want to convert DUN file to EXE, ISO, BIN, CUE, PAK, WAD, PK3, PK4, BSP, MAP, SAV or DAT, you can use Dungeon Defenders or similar software from the "Game Data Container" category. In the File menu, look for Save As… or Export….
To convert MOD, BIN, CFG, SCX, DAT, MPQ, LOG, CUE, INI, EXE, SCM or ISO files to DUN, try Dungeon Defenders or another comparable tool in the "Game Data Container" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our DUN converter.