Open and view OBJ files online — free, no signup, no upload
An OBJ file (Wavefront OBJ) is one of the most widely supported 3D mesh formats, storing vertices, normals and faces as plain text. It's commonly paired with an .mtl material file. This viewer opens OBJ files right in your browser so you can rotate, zoom and pan a model and check its bounding-box dimensions and triangle count — without installing software or sending your file anywhere.
How to view an OBJ file
1. Drag your file onto the box above, or click Open OBJ file. 2. Drag to orbit, scroll to zoom, right-drag to pan. 3. Read the width/depth/height and triangle count in the panel.
Frequently asked questions
How do I open an OBJ file online?
Drag your .obj onto this page or click Open File — the mesh renders instantly in your browser. Nothing is uploaded; it's read on your device.
Do I need the .mtl file too?
No. The geometry loads from the .obj alone; the viewer applies a neutral material so you can inspect the shape. Materials and textures aren't required to view it.
Is my OBJ uploaded anywhere?
No — the viewer is 100% client-side. Your file never leaves your computer.
What do the dimensions show?
The bounding-box width, depth and height in the file's own units, plus the triangle count.