Free Online OFF Viewer
Open your OFF file right on this page: rotate and zoom it, measure distances and angles, cut a section and see its size, volume and holes.
- Free
- No sign-up
- No install
Open Files → rotate and zoom → Measure or Section
What you can do with your OFF file
Rotate, zoom and pan
Turn the model with the mouse or touchpad and zoom in on any detail. Front, Top and Isometric views are one click away.
Measure distances and angles
Measure Distance shows the distance between points you pick on the model, and Measure Angle the angle between edges.
Cut a section
Section cuts the model with a plane, so you can look inside it and check walls and cavities.
Check size and volume
Bounding Box draws the overall size. The Information panel shows the dimensions, volume, area, triangle count and holes.
Convert the file
Save your OFF file in another format on the converter pages below or in the free desktop app.
How to open an OFF file in 3 steps
Open your OFF file
Click Open Files in the viewer above, then Browse… and pick your .off file. It opens in your browser, with no account and no install.
Rotate and zoom
Drag to turn the model and scroll to zoom. The View Settings tab has Front, Top and Isometric views, and Fit Data brings the model back into view.
Measure or cut a section
Click Measure Distance, Measure Angle or Section on the Viewer tab. To save the model in another format, use a converter below or the desktop app.
Add an OFF Viewer to Your App
- Multi-Format Support — meshes, point clouds, voxels, and line data
Modern UI — built with Dear ImGui: ribbon interface, scene tree, view cube, and measurement tools.
Order-Independent Transparency (OIT) — realistic rendering of transparent materials.
Customizable Interaction — support for mouse, keyboard, touch gestures, and SpaceMouse devices.
Plugin Architecture — extend the Viewer with your own tools and workflows.
