Free online tool

Open OBJ files instantly.

Drop a .obj file below and it renders immediately in your browser. The viewer parses Wavefront OBJ geometry locally, so you can rotate and inspect a model from a marketplace, a scan or a game pipeline without installing anything.

Drop your OBJ file here
or click to browse — it opens right here in your browser, nothing is uploaded
.obj
Why this tool

Free, private, in the browser.

Local, private rendering

The OBJ is parsed in your browser with three.js. No upload, no server, no trace of your file anywhere.

Handles missing materials gracefully

OBJ files often ship without their .mtl sidecar. The viewer applies a neutral material so you can still judge the geometry.

CAD-style navigation

Orbit, pan, zoom, a view cube for standard views, and double-click to re-center on the model.

How it works

Three steps, no setup.

01
Drop your OBJ

Drag the .obj file into the drop zone, or click to browse. The geometry loads in seconds.

02
Orbit and inspect

Check topology, proportions and surface quality from every angle.

03
Convert if needed

Need it printable or web-ready? Jump to the free OBJ to STL or OBJ to GLB converters.

What is an OBJ file?

Wavefront OBJ is one of the oldest and most widely supported 3D formats. It is a plain-text description of vertices, texture coordinates and faces, usually paired with a .mtl file for materials and separate image files for textures. Almost every DCC tool — Blender, Maya, 3ds Max, ZBrush — imports and exports it, which is why marketplaces and photogrammetry tools still use it heavily.

OBJ textures and the .mtl file

This viewer loads the .obj geometry file. Because OBJ splits materials into a separate .mtl file and texture images, a standalone .obj shows untextured — that is a property of the format, not a bug. If you need a single self-contained file with materials baked in, convert the model to GLB, the format used on the web and in AR.

Questions

Answered, plainly.

Is the OBJ viewer free to use?+

Completely. No account, no limits on how many files you open, no watermark.

Does my OBJ file get uploaded?+

No. Everything happens locally in your browser with the File API and three.js — the file never touches a server.

Why does my OBJ look gray?+

OBJ stores materials in a separate .mtl file and textures as separate images. When you open a lone .obj, the viewer applies a neutral gray material so the geometry is still fully inspectable.

Can I convert OBJ to STL for 3D printing?+

Yes — use the free OBJ to STL converter linked below. It converts in the browser and downloads the STL instantly.

More free tools
STL ViewerOBJ to STL ConverterOBJ to GLB ConverterAll free tools →
Sculpty studio

Don't have a model yet? Generate one.

Type a prompt, get a textured 3D model in about a minute — then download it as GLB, STL, OBJ, FBX or USDZ.

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