3D Viewer & Mesh Checker - STL, OBJ, 3MF, GLB

About

A fast, private 3D model viewer that runs entirely on your computer. Drop in a
file and inspect it before you slice or share it — no upload, no account, no
tracking.

VIEW 3D FILES INSTANTLY
• Supports STL, OBJ, 3MF, GLB and GLTF
• Orbit, zoom and pan with smooth controls
• Wireframe mode for checking geometry
• Correct Z-up orientation for STL/3MF print files

MESH CHECKUP FOR 3D PRINTING
Every file gets an instant printability report powered by the MeshRefinery
mesh engine:
• Watertight check (open/boundary edges)
• Non-manifold edge detection
• Loose fragments / multiple shells
• Degenerate (zero-area) faces
• Triangle, vertex and part counts, plus model dimensions

FIX PROBLEMS IN ONE CLICK
Found holes or non-manifold geometry? Jump straight to MeshRefinery's free
in-browser repair tool, or convert between formats (STL ⇄ OBJ, GLB → STL/3MF
and more) on meshrefinery.com.

100% PRIVATE
Your files never leave your computer. The extension requests zero permissions,
collects zero data, and works offline.

Made by MeshRefinery — free online 3D print file tools.
https://meshrefinery.com