3MF Model Viewer
Open and inspect 3mf files directly in your browser. No installation.
Modern 3D printing format with color, texture, and units.
Drop your 3MF file here
Upload a 3MF file or ZIP package to inspect your 3D model.
See What STL Can't Show You
3D Manufacturing Format packages color, texture, units and print metadata that STL has no way to express, which is why many modern slicers have moved to it. GLBKit reads that metadata and renders the mesh in the browser, so you can check a .3mf package visually before it reaches your slicer.
Modern Manufacturing Metadata
Reads color, texture, units and print settings that STL simply can't express.
STL Alternative
Useful when a print workflow has moved on from STL but you still want a quick visual check.
No Slicer Required to Preview
Check a .3mf package before opening it in your slicer.
Inspect Mesh and Color
Rotate through the model to confirm geometry and per-part color assignments.
GPU-Accelerated Rendering
Renders 3MF meshes smoothly in the browser.
No Upload Needed
Review manufacturing files locally, without sending part data anywhere.
About this format
3MF (3D Manufacturing Format) is the modern XML-based format for 3D printing. It bundles mesh, color, texture, units, and print metadata in a single ZIP package, addressing many of STL's limitations. GLBKit renders .3mf files in the browser so you can inspect printable meshes, verify color, and confirm units before slicing.
What is a .3mf file?
.3mf is an XML-based 3D format published by the 3MF Consortium. A .3mf file is a ZIP package containing a 3D model XML, optional textures, and print metadata like units, materials, and slice hints.
3MF is the modern recommendation for 3D printing, supported by Windows 3D Builder, PrusaSlicer, Bambu Studio, Cura, and other major slicers.
- XML-based 3D format in a ZIP package
- Stores mesh, color, texture, units, and print metadata
- Published by the 3MF Consortium (Microsoft, HP, Autodesk, others)
- Modern replacement for STL in 3D printing
Common uses for 3MF files
3MF is the recommended format for modern 3D printing. It captures more information than STL and is increasingly the default export for slicing software.
- Multi-color and multi-material 3D prints
- Modern slicer workflows (Bambu Studio, PrusaSlicer, OrcaSlicer)
- Engineering prints with units and tolerance metadata
- Replacement for STL in 3D printing
How GLBKit renders .3mf files
GLBKit unpacks the .3mf ZIP in the browser, parses the model XML, and renders the mesh with WebGL. Vertex colors and textures are preserved where present.
- Drop a .3mf file to start
- Orbit, pan, and zoom with mouse, touch, or pen
- Vertex color and texture rendering
- No upload, no signup, fully local processing
GLBKit capabilities for .3mf
GLBKit renders the mesh and visual properties of a 3MF file. Print metadata like tolerance and slice settings is shown via the model itself but not surfaced as a UI.
- Mesh rendering with vertex color and textures
- Accurate unit handling from the 3MF metadata
- Inspect printable models before slicing
- Process files locally in the browser
Who uses GLBKit for .3mf files
If you use a modern slicer, you are probably already producing 3MF. GLBKit is the fastest way to inspect a 3MF before printing.
- 3D printing hobbyists and pros
- Slicer users (Bambu Studio, PrusaSlicer, OrcaSlicer)
- Engineers reviewing printable models with metadata
- Multi-material printer operators
Open your .3mf file now
Drop a .3mf file into the viewer. Inspect printable meshes with color and texture in seconds.
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3D Model Viewer
Switch between any supported format in a single universal viewer.
How to Open 3MF Files Online
Learn how to open, view, and inspect 3MF 3D models online using the GLBKit 3MF Model Viewer.
- Upload your 3MF fileDrag and drop your .3mf file into the GLBKit viewer or click the upload button to select a 3MF file from your device.
- Load the 3MF packageGLBKit extracts and loads the 3MF geometry and material data directly in your browser.
- Explore the 3D modelRotate, zoom, and pan around the 3MF model to inspect its geometry from different angles.
- Inspect 3MF materialsReview supported 3MF materials, colors, and texture data when present in the package.
- Preview your 3MF assetView the 3MF model directly in your browser before 3D printing or other workflows.
Related guides
Frequently Asked Questions
Common questions about opening 3MF files for 3D printing and manufacturing workflows.