What 3D Model File Formats Are Available on Open3dModel.com?

Updated

Open3dModel.com lists its free downloads in ten file formats: Blend, Max, Obj, Fbx, Skp, C4d, Ma, Mb, Dae, and Stl. Which one you need depends entirely on the software you model or render in — the site does not convert files for you, so you pick the format that matches your toolchain before downloading. A single model page may offer several of these formats, but not every model is published in all ten.

The formats and the software they belong to

Format Extension Primary software / use
Blend .blend Blender
Max .max Autodesk 3ds Max
Obj .obj Broad interchange format; opens in Blender, Maya, 3ds Max, Cinema 4D, and most engines
Fbx .fbx Autodesk family (Maya, 3ds Max), Unity, Unreal Engine; carries rigs and animation
Skp .skp SketchUp
C4d .c4d Cinema 4D
Ma / Mb .ma / .mb Autodesk Maya (Ma is ASCII, Mb is binary)
Dae .dae Collada; cross-application interchange, common in older pipelines
Stl .stl 3D printing and mesh-only workflows; no materials or rigging

How to choose the right one

Match the format to the program you actually work in, in this order of preference:

  1. Native format first. If you use Blender, take Blend. If you use 3ds Max, take Max. If you use Maya, take Ma or Mb. Native files preserve the most structure — materials, modifiers, rigs, and scene setup.
  2. Interchange format second. If the native format isn't offered, use Fbx or Obj. Fbx is the better choice when the model is rigged or animated; Obj is the safer choice for static geometry and is read by nearly everything.
  3. Stl only for printing. Stl contains geometry alone. If you plan to render or animate, it will look flat and untextured.

What to check before you download

  • Rigged, animated, or printable. The site describes models with these tags, and they map to formats: rigged and animated assets are most useful as Fbx or native Maya/Max files, while printable assets are typically Stl.
  • Polygon density. Listings distinguish highly detailed from low-poly models. Low-poly assets are usually intended for games and real-time use; high-detail ones for still renders.
  • Format availability per model. The example listing "Free Vintage Tv Wood Case" is published in Blend, C4d, Dae, Fbx, Max, Obj, and Skp — seven formats, not ten. Always confirm the format you need appears on the specific model page rather than assuming the full list applies.

Common snags

  • Opening a native file in the wrong program. A .c4d file will not open in Blender without conversion, and a .max file requires 3ds Max or a converter. Download the format that matches your software instead of converting after the fact.
  • Missing textures. Interchange formats such as Obj and Fbx sometimes reference texture files separately. Check whether the download includes a texture folder alongside the model file.
  • Version mismatch. Native files are often saved for a specific software version. If your copy of Maya or 3ds Max is older than the file, it may refuse to open — the interchange format is the workaround.

If you are unsure, download the Obj or Fbx version first: both open in the widest range of software, and you can always return for the native file once you know the model fits your project.