Instant preview
Drop a binary or ASCII STL on this page and orbit it immediately.
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View STL Files Online
Drop an STL file into the preview to see it in 3D with its bounding size, triangle count and volume. The file never leaves your browser.
Drop a STL file here
The preview runs in your browser. Your file is not uploaded.
What you can do
Size and volume
See the bounding box in the file units and the enclosed volume, useful before printing.
Triangle count
Check how heavy the mesh is before you send it to a slicer or upload it.
Measure and section
In the full viewer, measure distances and cut a section through the model.
Share a link
Upload once and send a link that opens in any browser.
Edit when needed
Open the same file in the 3D Model Creator to fix or change it.
How to open an STL file online
- Drag the .stl file onto the preview area above, or click to choose it.
- Orbit with the mouse or a finger, and read the size, triangles and volume.
- For measuring, sections and sharing, upload it to VIZON.
Frequently asked questions
Is my STL uploaded when I preview it here?
No. The preview reads the file locally in your browser. Nothing is uploaded unless you add it to VIZON yourself.
Does the viewer support ASCII and binary STL?
Yes, both.
How is the volume calculated?
From the closed triangle surface. It is accurate for watertight meshes and only approximate for meshes with holes.
Related VIZON tools
Ready to try the STL viewer?
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