Click the "Select File" button above, and choose your JMA file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert JMA to another file type
To convert your JMA file to another format, you need OpenJazz or other Game software.
Convert a file to JMA
To convert other file formats to the "Game Asset Archive" file type, you need software like OpenJazz or a similar tool.
About JMA files
The .JMA file extension represents a unique duality in legacy and hardware computing. Primarily, it serves as a Game Asset Archive for the classic DOS platformer Jazz Jackrabbit. In this context, the file functions as a proprietary container for level data, sprite animations, and audio assets. Users often encounter these files when attempting to mod the game or extract nostalgic assets, but find them locked by a proprietary encoding that modern operating systems cannot natively parse. Because Jazz Jackrabbit was developed in the early 90s, these archives lack the standard headers found in modern ZIP or RAR files, making them inaccessible without specific extraction tools like OpenJazz.
Alternatively, .JMA files function as Gaming Mouse Configuration files for various OEM hardware, often referred to as 'J-Mouse' software. These files store macro definitions, button mappings, and sensitivity profiles. A common difficulty for gamers is the inability to transfer these settings between different mouse brands or view the macros in a human-readable format. Converting these files is essential for archiving game assets to ZIP or migrating hardware settings to universal text-based formats like JSON or TXT.
Convert.Guru analyzes your JMA file, detects the exact format, and lets you read the text inside.
If you want to convert JMA file to EXE, ISO, BIN, CUE, PAK, WAD, PK3, PK4, BSP, MAP, SAV or DAT, you can use OpenJazz or similar software from the "Game Asset Storage" 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 JMA, try OpenJazz or another comparable tool in the "Game Asset Storage" category.
The JMA Converter Story
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 JMA converter.