# Free online 3MF viewer.

Canonical page: https://imageto3dprint.com/3mf-viewer

Take a look inside your 3MF model. Explore its printable geometry in 3D before opening the project in your slicer.

A 3MF package can contain model geometry, units, multiple objects, and appearance information. Open it here to rotate and inspect supported model content. Use your slicer to review printer-specific settings, material assignments, and the final print preparation.

## See the model in 3D

Explore visible objects and their arrangement by rotating and zooming the preview.

## Inspect before slicing

Get a visual overview of a 3MF model before preparing layers, supports, or toolpaths in your slicer.

## Keep the package local

The selected 3MF file is read in your browser and is not uploaded to ImageTo3DPrint.

## Limitations

- A 3MF slicer project can include vendor-specific settings or extensions that this model viewer does not display. Linked model assemblies are not supported; export a single self-contained 3MF model.
- A preview does not apply printer profiles, assign physical filaments, generate toolpaths, or certify a successful print. Compressed files are subject to additional memory and safety limits.

## Frequently asked questions

### How is 3MF different from STL?

STL primarily stores a triangular surface. A 3MF package can also store units, several objects, colors, and other printing information, depending on the software that created it.

### Will the viewer show all settings in my slicer's 3MF project?

No. The viewer displays supported model geometry. Printer profiles, supports, filament assignments, and vendor-specific project data should be reviewed in the slicer that created or supports the project.

### Does opening a 3MF file start a print?

No. This is a visual model viewer. It does not connect to a printer, generate G-code, or send a print job.

## Related references

- [Pricing and credit costs](https://imageto3dprint.com/pricing.md)

- [AI content index](https://imageto3dprint.com/llms.txt)