Free OBJ Viewer Online

Drop an OBJ file below to turn it, zoom in, and check its triangle count and size. It all happens in your browser, so your file is never uploaded.

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Your files never leave your browser. Nothing is uploaded.

What is an OBJ file?

OBJ, also called Wavefront OBJ, is an old and simple text format for 3D shapes. It lists points and the faces that join them. Almost every 3D app can read and write it, which makes it a common way to move a model between programs.

Blender, Maya, 3ds Max, Rhino, ZBrush, SketchUp Pro, and many scanning apps can export OBJ.

An OBJ often comes with a .mtl file for colors and picture files for textures. This viewer opens the OBJ alone, so it shows the shape without those colors. To keep them, use the OBJ to GLB converter on this site, which accepts the .mtl and the pictures along with the model.

How to view an OBJ file

Drop the OBJ file on the viewer above, or choose it from your device. The model opens in a moment and fills the frame.

Drag to orbit around your OBJ model, and scroll or pinch to zoom. The Corner, Front, Side, and Top buttons jump to a standard view.

Shaded draws the model with its own material, which for a lone OBJ is plain. Clay draws a light, even surface that makes the form easier to read.

Why an OBJ can look wrong

A face in an OBJ can have more than three corners. Walls with doors and windows cut out are often saved as one large face with an outline that goes around the opening. This viewer cuts each face into triangles along its real outline, so openings stay open.

An OBJ does not say which unit it uses, so the viewer shows the size as plain numbers. A model from Blender is often in meters, and one from a CAD tool in millimeters.

A very large OBJ is mostly text, and text takes space. If your file is over the size limit, export only the part you need.

What the numbers mean

The triangle count shows how detailed the surface is. More triangles mean more work for the device that draws the model, so a model that turns slowly may need a lighter export.

The size is the width, height, and depth of the box around the model. An OBJ has no unit, so the size is shown in the file's own numbers.

Fixing common problems

OBJ files from CAD tools can be very large. If yours is over the size limit, export a smaller part.

If your OBJ model looks plain, its colors or pictures may be stored in separate files. This viewer opens one file at a time and draws only what the file holds.

Files over 150 MB are not opened. Export just the part you need.

If you see a message about 3D, your browser may have WebGL turned off. Try another browser, or turn on hardware acceleration in the browser settings.

Your file stays on your device

The viewer reads your OBJ file in the browser. Nothing is uploaded, and the page does not load anything the file points to. The page counts a visit like any other page, but it never sees the file's name or contents.

From a viewer to a finished render

A viewer shows you the model. A render shows you how it could look built. The Inkfinish studio opens OBJ files too, lets you pick the angle, and turns that view into a finished image from a short description of materials and light.

Questions

Is this OBJ viewer free, and is my file uploaded?

It is free, and you do not need an account. The file is read in your browser and never uploaded, so it stays on your device.

Why does my OBJ show no colors?

Colors live in a separate .mtl file, which this viewer does not read. Use the OBJ to GLB converter and choose the .mtl and the pictures together with the OBJ to keep them.

Does the viewer handle quads and larger faces?

Yes. Faces with more than three corners are cut into triangles along their outline, so shapes with openings are drawn correctly.

What unit is an OBJ in?

An OBJ does not say. Blender models are often in meters and CAD exports in millimeters. The viewer shows the size as plain numbers, so use what you know about the source app.

How large a file can I open?

Files up to 150 MB. A very large model may open slowly on a phone or an older computer, so export only the part you need if it struggles.

What does the triangle count tell me?

It is the number of triangles that make up the model's surfaces. A higher count means more detail and more work for the device that draws it.

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Make it a finished render

Open the studio and add your OBJ file. The studio opens GLB, glTF, OBJ, FBX, STL, 3MF, or DAE files. You pick the angle and describe the finish, and Inkfinish renders that view as a finished image.

Render this model photoreal

Try 3 renders free, no sign-up needed: watermarked, at standard size.

Updated October 2026. Open-source licenses