Download Sample OBJ Model Files (Wavefront 3D)
Download free sample OBJ files. The Wavefront OBJ format is a simple data-format that represents 3D geometry alone. Use these files to test Material Library (.mtl) linking, Texture mapping (UVs), and parsing speed. STANDARD Geometry & Materials File Name Specs Size Action textured_cube.obj Standard Includes UV coordinates (vt) and links to a .mtl file. Best…
Download free sample OBJ files. The Wavefront OBJ format is a simple data-format that represents 3D geometry alone. Use these files to test Material Library (.mtl) linking, Texture mapping (UVs), and parsing speed.
STANDARD
Geometry & Materials
| File Name | Specs | Size | Action |
|---|---|---|---|
| textured_cube.obj Standard |
Includes UV coordinates (vt) and links to a .mtl file. Best for testing texture rendering. |
5 KB | Download |
| low_poly_car.obj Game Asset |
Low polygon count. Contains separate “Groups” (g tag) for wheels and body to allow sub-selection. |
50 KB | Download |
| face_scan.obj Raw Scan |
Dense mesh from a 3D scanner. No UVs, no materials. Just thousands of vertices. Good for stress testing. | 2 MB | Download |
QA / GEOMETRY
Errors & Scale
| Test Case | Description | Size | Action |
|---|---|---|---|
| Missing Material (.mtl) | Broken Link. The OBJ calls mtllib lost.mtl, but the file is missing. Viewer should fallback to default grey/pink. |
10 KB | Download |
| Quads and N-Gons | Non-Triangulated. Faces defined by 4 or more points (f 1 2 3 4). Parsers expecting only Triangles will crash. |
15 KB | Download |
| Negative Indices | Relative Referencing. Valid syntax where vertices are referenced from the end of the list (e.g. f -1 -2 -3). Rare and hard to parse. |
5 KB | Download |
Technical Specs: OBJ
- Structure: Text file.
v= Vertex (Point),vn= Vertex Normal,vt= Texture Coordinate,f= Face. - Indexing: OBJ is 1-based. The first vertex is at index 1. Most programming languages (C++, JS, Python) are 0-based. You must subtract 1 during parsing.
- MIME Type:
model/objortext/plain.
Frequently Asked Questions
Why is my model plain white?
You are likely missing the
You are likely missing the
.mtl file that accompanies the OBJ, or the path inside the OBJ file is pointing to a specific folder on the artist’s computer (absolute path) instead of a relative path.Is OBJ better than FBX/GLTF?
OBJ is simpler and more compatible. However, FBX and GLTF are better for animations because OBJ cannot store “Bones”, “Rigging”, or animation sequences. OBJ is for static geometry only.
OBJ is simpler and more compatible. However, FBX and GLTF are better for animations because OBJ cannot store “Bones”, “Rigging”, or animation sequences. OBJ is for static geometry only.
How to open and view OBJ files?
OBJ is a universal format. Almost every 3D tool supports it.
- Blender: The best free tool. Use “File > Import > Wavefront (.obj)” to view the model and check for N-Gons or bad geometry.
- MeshLab: Perfect for analyzing raw scan data and converting high-poly OBJs to lighter formats.
- Notepad++: Since OBJ is plain text, use this to check if the file references a material library (search for
mtllib).
Developer’s Corner: Simple Parser
Parsing OBJ is a common interview question. Here is how to extract vertices in Python.
# Python: Parse OBJ Vertices
vertices = []
with open(‘model.obj’, ‘r’) as f:
for line in f:
if line.startswith(‘v ‘):
parts = line.split()
# Skip parts[0] which is “v”
x, y, z = float(parts[1]), float(parts[2]), float(parts[3])
vertices.append((x, y, z))
print(f“Found {len(vertices)} vertices”)
vertices = []
with open(‘model.obj’, ‘r’) as f:
for line in f:
if line.startswith(‘v ‘):
parts = line.split()
# Skip parts[0] which is “v”
x, y, z = float(parts[1]), float(parts[2]), float(parts[3])
vertices.append((x, y, z))
print(f“Found {len(vertices)} vertices”)