Click the "Select File" button above, and choose your ST file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert ST to another file type
To convert ST files to another format, you need Notepad++ or other Developer software.
Convert a file to ST
To convert other file formats to the "Code or Disk Image" file type, you need software like Notepad++ or a similar tool.
About ST files
The .ST extension is heavily overloaded and primarily represents plain-text source code (such as Smalltalk Source Code, IEC 61131-3 PLC Structured Text, or StringTemplate files) or a binary Atari ST Disk Image used by retro computing emulators. Other niche applications include M.U.G.E.N fighting game state definitions, Elasticsearch cluster states, and Hitachi automation templates. Opening an .ST file requires specialized software depending on its true underlying format. For code and templates, IDEs like Squeak (for Smalltalk) or CODESYS (for PLC logic) are standard, though any basic text editor will work. For retro gaming, emulators like Hatari are required to mount the binary disk dumps. The primary disadvantage of the .ST format is its ambiguity; operating systems cannot automatically determine the correct application to use, frequently leading to file association errors. Furthermore, specialized raw formats like Atari disk images are unreadable natively and lock data behind outdated file systems. For editing and web distribution, convert text-based .ST files to universal formats like .TXT, .MD, or .PDF. If you are dealing with a binary Atari disk image, extracting and converting it to modern archive formats like .ZIP or .ISO is highly recommended for archiving and simple file system access.
Convert.Guru analyzes your ST file, detects the exact format, and lets you read the text inside.
If you want to convert ST file to LB, MT, LUA, ISO, IMG, DMG, VHD, VMDK, VDI, HDD, QCOW or QCOW2, you can use Notepad++ or similar software from the "Source Code or Disk Image" category. In the File menu, look for Save As… or Export….
To convert VFD, DMG, OVA, IMA, VBOX, ADF, PVS, VHD, OVF, ISO, DSK or IMG files to ST, try Notepad++ or another comparable tool in the "Source Code or Disk Image" category.
The ST 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 ST converter.