Free online STL viewer. Open and inspect STL, OBJ, PLY and 3MF files in 3D right in your browser. Nothing is uploaded: your files stay on your computer.
How to view an STL file online
- Drag your file into the viewer, or click Choose file.
- Rotate with the left mouse button, zoom with the wheel, pan with the right button (pinch and drag on mobile).
- Change the color, turn on wireframe or auto-rotate, and save a PNG screenshot.
What the viewer tells you
- Dimensions (X, Y, Z) in millimeters — check that the model fits your build plate.
- Triangle count — a quick way to see how detailed the mesh is.
- Volume and estimated resin — for a solid print, 1 cm³ is about 1 ml of resin. Hollowing the model uses much less.
FAQ
Is my file uploaded to a server?
No. The model is read and rendered locally by your browser using WebGL, so it is safe for private or paid files.
Which formats are supported?
STL (binary and ASCII), OBJ, PLY and 3MF. Need another format? Try our STL Converter.
Is there a file size limit?
There is no hard limit, but very large files (several hundred MB) depend on your computer memory and may load slowly.
Looking for something to print? Browse our STL models.