Free 3D model viewer
Free online STL viewer and OBJ viewer — open your 3D model in any browser, on desktop or mobile. Drag to rotate, scroll to zoom and inspect it from every angle. No software installation, no account needed, and your file is never uploaded.
Your file never leaves this page: it is opened entirely in your browser, nothing is uploaded or stored, and the model is cleared as soon as you navigate away.
How to open an STL file online
1
Choose your file
Pick or drag in a .stl or .obj file from your computer, up to 100 MB.
2
View it instantly
The model opens right in your browser — rotate, zoom and pan with your mouse.
3
Adjust and inspect
Use the XYZ controls to tilt or spin the model upright on the base plate.
100% private — nothing is uploaded
Unlike many online STL viewers, this one parses your file entirely in your browser. Your 3D model never leaves your device and is cleared the moment you leave the page.
STL and OBJ, completely free
No signup, no subscription, no limits on how many files you view. Open a printable STL from any slicer, or an OBJ export, and check it before sending it to print.
STL viewer FAQs
Is this STL viewer really free?
Yes — it is completely free with no account, no signup and no limits on how many STL or OBJ files you open.
Does my file get uploaded to a server?
No. The viewer runs entirely in your browser, so your model is parsed locally and never uploaded or stored.
What 3D file formats are supported?
STL and OBJ files up to 100 MB, including printable STLs exported from any slicer or modelling software.
Can I view an STL on my phone?
Yes — the viewer works in any modern browser on desktop, tablet and mobile, with no installation required.
No model yet?
Turn photos into a print-ready miniature in minutes — your first model is free, one per eligible account.
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Want it printed?
Send us your STL and we'll quote professional resin printing and shipping, usually within two working days.
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