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Convert Your 3D Mesh/Model STPZ Files to OBJ

Our free and fast tool will convert most 3D mesh or STPZ (Compressed STEP-File) model files to a standard OBJ (Wavefront) file that can then be edited further in most popular 3D editing packages such as Blender or 3D printed without any further processing. Our conversion tool can also batch convert multiple STPZ files; up to 25 files at a time can be converted.

To convert your STPZ file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a OBJ file and will be ready for download shortly afterwards. For more information about the STPZ to OBJ conversion process, see the conversion information section below.

How to Convert your STPZ to OBJ Online?

Here are two simple steps to convert your STPZ to OBJ.

Upload a STPZ

Click the "Upload a STPZ File" button and select a STPZ to upload. The maximum file size is 100MB.

Download your OBJ

Click the download link once completed to receive your OBJ file.

File Format Information for STPZ to OBJ

ExtensionSTPZ
Full NameCompressed STEP-File
Type3D Model
Mime Typeapplication/octet-stream
FormatBinary
ToolsSTPZ Converters, 3D Model Voxelizer, Create STPZ Animation, Text to STPZ, STPZ Viewer

Description

The STPZ file format is a compressed version of the STEP file format, which is a 3D format defined in 1994 and used to store 3D objects for use in computer-aided design (CAD) applications. STPZ files are compressed binary files that, when decompressed into text format, contain one rendering command per line.

Although STEP files are widely supported by most CAD applications, there are only a few that support STPZ files. As with the uncompressed STEP version, the STPZ format does have its limitations, such as the necessity to read the complete file into memory in order to parse the contents, and due to the textual storage of information, the files can be quite large.

STPZ Notes

OBJ files, when imported, will be converted to 3D geometry comprising vertices and faces. If the OBJ file contains color information, this will be converted where possible.

Supported Features

  • Mesh geometry
  • Mesh colors

Description

The OBJ file format, originally created by Wavefront Technologies and later adopted by many other 3D software vendors, is a simple text-based file format for describing 3D models/geometry. This data can include vertices, faces, normals, texture coordinates, and references to external texture files.

As the format is text-based, it is relatively straightforward to parse in 3D modeling applications. A downside of the text-based format is that the files can be rather large compared to similar binary formats such as STL and compressed files such as 3MF.

OBJ Notes

Our tool will save any material and texture files separately; these additional files will be included with your final OBJ file at the time of download.

Supported Features

  • Mesh geometry
  • Materials (Via an MTL file)
  • Textures (PNG, JPG, TGA formats)

Comparing STPZ and OBJ Features

 

STPZ Features

  • Mesh Geometry (Vertices and Faces)
  • Vertex Normals
  • Face Normals
  • Vertex Colors
  • Face Materials (Excluding textures)
  • Textures
  • Point Cloud
  • Multiple Objects Per File
  • Object Transforms (Translation, Rotation, and Scale)
  • Bones/Joints
  • Animations
  • Suitable for 3D Printing

OBJ Features

  • Mesh Geometry (Vertices and Faces)
  • Vertex Normals
  • Face Normals
  • Vertex Colors
  • Face Materials (Excluding textures)
  • Textures
  • Point Cloud
  • Multiple Objects Per File
  • Object Transforms (Translation, Rotation, and Scale)
  • Bones/Joints
  • Animations
  • Suitable for 3D Printing

How does it work?

Converting from the STPZ file format to OBJ can be a complex process, and any tool used for this conversion process needs to be able to handle a variety of data conversion tasks as well as identify any defects within the 3D model and fix them. Here we will explain the conversion process used by our tool to accurately convert your STPZ file to a valid OBJ 3D model. Let's start with the conversion process, which involves the following steps:

Step 1: Read the Source STPZ File

An STPZ is a compressed version of a 3D STEP file which is a human readable text file file containing 3D data such as shapes, surfaces, curves and other geometric data. When combined, these make up the 3D model you see on your screen.

For more information regarding the STPZ file format, please see this great article that goes into a lot of detail explaining the STPZ format.

Step 2: Process File Data

With the STPZ file data read, our tool generates an internal representation of the full 3D model and will attempt to fix any geometry issues encountered. Along with repairing any issues with the 3D model, the tool will remove any duplicated vertices and prepare the model for exporting to the OBJ format.

Step 3: Saving to the OBJ Format

The OBJ format has been around for many years and has become a standard format for 3D modeling. Most 3D modeling software can open OBJ files, which means our tool now needs to take the in-memory 3D model we created in step 2 and convert it to the OBJ format, ensuring it can be opened in all 3D modeling software with no compatibility issues.

Frequently Asked Questions

Will the OBJ file retain the textures from my STPZ file?

Yes! If your STPZ file contains textured geometry, the texture image files along with the texture coordinates (UV data) will be exported with the final OBJ file.

How long does it take to convert my STPZ to OBJ?

We aim to process all STPZ to OBJ conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.

How accurate is the STPZ to OBJ conversion?

We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to convert my STPZ to OBJ on ImageToStl.com?

Yes, of course! We do not store the STPZ file you submit to us. The resulting OBJ file, once created is deleted 15 minutes after upload and the download link will expire after this time.

Do I need a high-spec. computer to use the STPZ to OBJ converter?

No. All our conversion tools process your STPZ file on our dedicated conversion servers, meaning you can use our tools on low-spec computers, laptops, tablets, and mobile devices and receive your converted OBJ file quickly.

Can I convert my STPZ to OBJ on Windows, Linux, Android, iOS or Mac OS?

Yes! Our STPZ to OBJ tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.

What if I am using an Ad Blocker, will that affect things?

Yes. Although you can use an Ad Blocker, if you like our STPZ conversion tool please consider white-listing our site. When an Ad Blocker is enabled there are some conversion limits on some of our tools and processing/conversion times will be longer.

Can I get support with converting my STPZ to OBJ?

Yes. When you have converted your STPZ to OBJ, there is a "Feedback" option that you can use to let us know of any issues you encountered when converting your file.

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