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Convert Your 3D Mesh/Model OFF Files to STPZ

Our free and fast tool will convert most 3D mesh or OFF (Object File Format) model files to a standard STPZ (Compressed STEP-File) 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 OFF files; up to 25 files at a time can be converted.

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

How to Convert your OFF to STPZ Online?

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

Upload a OFF

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

Download your STPZ

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

File Format Information for OFF to STPZ

ExtensionOFF
Full NameObject File Format
Type3D Model
Mime Typetext/plain
FormatText
ToolsOFF Converters, 3D Model Voxelizer, Create OFF Animation, Compress OFF, Text to OFF, OFF Viewer
Open WithMeshLab, CAD Assistant

Description

The OFF file format is a simple text-based format capable of storing 2D and 3D geometry and was originally developed for the Geomview application. There is also an extension to the OFF format used by the Stella4D application to enable the storage of four-dimensional data.

The format can contain common vector information such as vertices, faces, shapes, and edge information, and it also has support for including color information. As the format is text-based, the files can become rather large, with no built-in compression options available.

OFF Notes

If your STPZ file contains face colors, these will be imported and mapped where possible.

Supported Features

  • Mesh geometry
  • Face colors
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.

Comparing OFF and STPZ Features

 

OFF 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

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

How does it work?

Converting from the OFF file format to STPZ 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 OFF file to a valid STPZ 3D model. Let's start with the conversion process, which involves the following steps:

Step 1: Read the Source OFF File

In its simplest form, an OFF file is a plain text file containing human-readable 3D data such as vertices, faces, normals, and more. When combined, these make up the 3D model you see on your screen.

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

Step 2: Process File Data

With the OFF 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 STPZ format.

Step 3: Saving to the STPZ 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 STPZ format.

Frequently Asked Questions

How can I convert my OFF file to STPZ?

First click the "Upload..." button, select your OFF file to upload. Select any configuration options. When the OFF to STPZ conversion has completed, you can download your STPZ file straight away.

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

We aim to process all OFF to STPZ 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 OFF to STPZ 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 OFF to STPZ on ImageToStl.com?

Yes, of course! We do not store the OFF file you submit to us. The resulting STPZ 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 OFF to STPZ converter?

No. All our conversion tools process your OFF 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 STPZ file quickly.

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

Yes! Our OFF to STPZ 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 OFF 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 OFF to STPZ?

Yes. When you have converted your OFF to STPZ, 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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