Facet.
Local processing

STL Model
Viewer.

Inspect your 3D models from every angle. Open an STL file to explore its surface, wireframe, and dimensions in your browser.

or drop a .stl file onto the viewport
Your files stay on your device.
MODEL VIEWPORT
impeller.stl
Drop your STL file here
TRIANGLES—
DIMENSIONS (X × Y × Z)—

Inside the viewer

Orbit & zoom

Rotate the part, pan across a surface, or zoom in to inspect a detail.

Mesh inspection

Switch from solid shading to wireframe to see the triangles behind the surface.

Model dimensions

Read the mesh extents along each axis in the file’s original coordinate units.

Quick guide

From file to first inspection.

  1. Open your model

    Select an STL file, drop it onto the viewport, or explore the sample impeller.

  2. Find your angle

    Drag to orbit, Shift-drag to pan, and scroll to zoom. On touchscreens, use one finger to orbit or two to pan and pinch.

  3. Save a view

    Choose solid or wireframe shading, then use the camera button to download a PNG.

Supported formats

Binary STL.stl

Compact triangle data in a binary file.

ASCII STL.stl

Triangle coordinates stored as readable text.

Common questions

Where is my STL file processed?

Your browser reads the file and renders its mesh on your device. Opening a local file does not send it to a server.

Are dimensions in millimeters?

STL files do not specify a unit. The viewer shows the difference between the smallest and largest coordinate on each axis. Use the unit you chose when exporting the model.

Can I use the viewer on a phone?

Yes. Open a file from your device and use touch gestures to inspect it. The size of mesh your browser can display depends on the memory available.

How do I return to the starting view?

Use the fit button at the top right of the viewport. It centers the current model and restores the initial zoom and viewing angle.