The OBJ file format is a 3D graphics file format used to define complex 3D models, including geometry, materials, and textures. OBJ files are text files, making them human-readable and easy to modify by hand. The downside to this ease of readability is that the files can become rather large when dealing with large or complex 3D models.
As mentioned, the OBJ format stores not only 3D model geometry but also materials and textures. These materials are usually defined in a separate file with the MTL file extension and specify geometry rendering details such as diffuse and specular color, transparency, and much more.
The OBJ material file can also reference external texture files. These are usually JPEG or PNG files; however, these can be older formats, such as TGA. Where materials are used, the OBJ file will also contain material names preceding the geometry faces they should be applied to. If textures are referenced, the geometry will also contain texture coordinates (UV) for each vertex.
OBJ Converter Capabilities
When converting 3D model or mesh files using our OBJ converter, we will attempt to convert color materials into a suitable format for use in the converted file.
| Extension | STEP |
| Full Name | STEP-File |
| Type | 3D Model |
| Mime Type | application/octet-stream |
| Format | Binary |
| Opens With | CAD Assistant |
STEP files are a 3D file format used to store complex 3D object definitions in a standard format to facilitate data transfer between compatible 3D modeling and CAD (Computer Aided Design) applications. In addition to storing 3D object data, the STEP format can store additional information such as materials, tolerances, and other relevant data.
The STEP format was first released in the early 1990's, has become a standard for 3D object storage, and is used in automotive, electronics, and other industries. STEP files can be opened in most modern CAD applications and can be imported into many 3D modeling applications too.
The file content is ASCII text-based and conforms to the ISO-10303-21 standard. The 3D object contained within the STEP file is described using a combination of points, lines, and edges. Due to the format being ASCII text, complex objects can lead to large file sizes. In addition to large file sizes, some complex STEP files can take a long time to open within editing applications, even on a high-spec, modern computer.
STEP Converter Capabilities
When converting your OBJ to STEP, our tool will attempt to accurately convert any color or material information.
