JMS Converter

Extract text from JMS files


Drop or upload your .JMS file
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How to extract text from your JMS file

  1. Click the "Select File" button above, and choose your JMS file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert JMS to another file type

To convert your JMS file to another format, you need Hot Potatoes or other Game software.

Convert a file to JMS

To convert other file formats to the "Project or ROM File" file type, you need software like Hot Potatoes or a similar tool.


About JMS files

The .JMS extension represents a split in functionality between educational authoring and legacy arcade gaming. Most users encountering this file in a document context have a Hot Potatoes Masher Project. This is an XML-based text file created by Hot Potatoes (specifically 'The Masher' tool) to bundle multiple exercises - like crosswords (JCross) or quizzes (JQuiz) - into a single linked unit. The problem users face is that a .JMS file is merely a blueprint/source file; it cannot be viewed natively in a web browser like Chrome or Edge. To make it usable, it must be compiled or 'mashed' into standard HTML pages. Alternatively, in the emulation scene, a .JMS file may refer to graphic or audio assets extracted from SNK Neo Geo titles like Metal Slug. These are binary blobs intended for use with emulators like MAME and are not meant to be edited or converted into human-readable formats. For the Hot Potatoes variant, the ideal conversion workflow is compiling to HTML for web publishing or converting the internal XML structure to TXT for manual code editing.

Convert.Guru analyzes your JMS file, detects the exact format, and lets you read the text inside.

Users also converted JPEG and P2B files.


FAQ

If you want to convert JMS file to TMP, TEMP, CACHE, LOG, BAK, OLD, NEW, PART, DOWNLOAD, CRDOWNLOAD, LOCK or PID, you can use Hot Potatoes or similar software from the "Quiz Project Compilation" category. In the File menu, look for Save As… or Export….

To convert DEVICE, CACHE, SOCK, SYMLINK, PID, MOUNT, FIFO, LOG, PIPE, TMP, JUNCTION or TEMP files to JMS, try Hot Potatoes or another comparable tool in the "Quiz Project Compilation" category.



The JMS 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 JMS converter.