Extract text from 3D Slicer scene files (MRML)
To convert MRML scene files to another format, you need 3D Slicer or other 3D software.
To convert other file formats to the "Scene Description File" file type, you need software like 3D Slicer or a similar tool.
The .MRML (Medical Reality Modeling Language) file is an XML-based scene description format used primarily by 3D Slicer, an open-source software platform for medical image processing and 3D visualization. It stores the exact state of a user's workspace. This includes node hierarchies, camera angles, color maps, transformation matrices, and file paths to external medical datasets like DCM (DICOM), .NRRD, or NII.
The critical disadvantage of the .MRML format is that it does not contain any actual image or 3D mesh data. It relies entirely on external linked files. If you share a .MRML file without the accompanying data folder, the scene breaks and becomes useless. Furthermore, this format is highly proprietary to the 3D Slicer ecosystem. Standard 3D software like Blender or AutoCAD cannot read it.
Users often attempt to convert .MRML files to 3D printable formats like STL or OBJ. However, because .MRML is strictly a text-based pointer file, direct conversion to a 3D geometry is impossible using standard online converters. To get a 3D mesh, you must open the complete scene inside 3D Slicer and manually export the specific models.
This makes .MRML files notoriously difficult to open or convert online if you expect a visual output. Traditional converters fail because they look for embedded geometry that does not exist. We can identify the file format, inspect the raw XML structure, and extract the plain text. This allows you to at least read the metadata and discover the file paths of the missing medical scans.
Convert.Guru analyzes your MRML file, detects the exact format, and lets you read the text inside.
If you want to convert MRML file to OBJ, FBX, DAE, 3DS, MAX, BLEND, MA, MB, C4D, STL, PLY or WRL, you can use 3D Slicer or similar software from the "Medical Scene Description" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to MRML, try 3D Slicer or another comparable tool in the "Medical Scene Description" 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 MRML converter.