What is a 3MF file?
A .3MF file is a 3D Manufacturing File created by the 3MF Consortium. It contains 3D models, materials, colors, and specific settings for 3D printing. The .3MF format uses ZIP) compression to package XML data and 3D textures into one single archive. It is a modern, reliable replacement for older 3D printing formats like .STL.
How to open 3MF files?
viewer.online/3mf analyzes .3MF files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. If you need to edit the file offline, you can use built-in tools like Microsoft 3D Builder on Windows. Popular 3D printing slicers like UltiMaker Cura and PrusaSlicer also fully support the format. Because the file is a compressed archive, you can use command-line tools or extraction software like 7-Zip to inspect the internal XML files.
Best practices and troubleshooting
A .3MF file can hold complex multi-part models and custom printer profiles. Some older 3D software might fail to read all of this data. If a .3MF file does not open properly, viewer.online/3mf can help identify the actual format of the user's file. If you need maximum compatibility with older software, we recommend file conversion to sensible target formats like .STL or .OBJ on convert.guru.
Summary
viewer.online/3mf directly opens and previews .3MF files in the browser, eliminating the need to install software or troubleshoot compatibility issues.