Our free and fast tool will convert most 3D mesh or STPZ (Compressed STEP-File) model files to a standard GLB (Graphics Language Transmission Format) 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 GLB file and will be ready for download shortly afterwards. For more information about the STPZ to GLB conversion process, see the conversion information section below.
Extension | STPZ |
Full Name | Compressed STEP-File |
Type | 3D Model |
Mime Type | application/octet-stream |
Format | Binary |
Tools | STPZ Converters, 3D Model Voxelizer, Create STPZ Animation, Text to STPZ, STPZ Viewer |
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.
GLB files, when imported, will be converted to 3D geometry comprising vertices and faces. If the GLB file contains color information, this will be converted where possible.
Extension | GLB |
Full Name | Graphics Language Transmission Format |
Type | 3D Model |
Mime Type | model/gltf-binary |
Format | Binary |
Tools | GLB Converters, 3D Model Voxelizer, Create GLB Animation, GLB Asset Extractor, Text to GLB, GLB Viewer |
Open With | Blender, MeshLab |
The GLB file format, which can also have the GLTF file extension depending on whether the content is binary or text/JSON, is a 3D file format used to describe 3D worlds and, as such, contains geometric data such as vertices, faces, normals, animations, and other 3D scene-related data.
The format, described by its creators as the "JPEG of 3D", has gained in popularity and is supported by a wide range of 3D modeling applications such as Blender and MeshLab. The GLB format is an open standard that is maintained by the Khronos Group.
If your original model file contains texture images and other texture-related data, these will be included in the final GLB file.
Converting from the STPZ file format to GLB 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 GLB 3D model. Let's start with the conversion process, which involves the following steps:
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.
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 GLB format.
With the conversion process entering its final stages, our tool now needs to take the in-memory 3D model we have created in step 2 and convert it to the GLB format.
First click the "Upload..." button, select your STPZ file to upload. Select any configuration options. When the STPZ to GLB conversion has completed, you can download your GLB file straight away.
We aim to process all STPZ to GLB conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.
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.
Yes, of course! We do not store the STPZ file you submit to us. The resulting GLB file, once created is deleted 15 minutes after upload and the download link will expire after this time.
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 GLB file quickly.
Yes! Our STPZ to GLB tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.
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.
Yes. When you have converted your STPZ to GLB, 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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