Free Online STL Viewer
Open STL files in your browser. No software, no account.
How to open an STL file online
Drop in your STL file
Drag a .stl file onto the viewer, or click to pick one.
Look at it from every angle
Drag to turn the model, scroll to zoom, right-drag to move it.
Save a picture or a mesh
Download a PNG of the view, or the model as GLB or STL.
When an STL viewer helps
Check a print before you start
Look over a 3D print or milling mesh from any angle before it goes on a machine.
Stays on your device
The mesh opens in your browser, not on a server.
Pass the shape on
Save the mesh as GLB for a tool that expects units and materials.
What is an STL file?
An STL file is a 3D shape stored as a skin of triangles. It is the standard file for 3D printing.
STL carries no unit and no colour. Choose the original unit for GLB downloads. STL downloads keep the original numbers.
Binary and ASCII STL both open.
Need to open an OBJ file?
OBJ keeps materials and textures from an MTL file.
Frequently Asked Questions
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