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Convert Your 3D Mesh/Model GLTF Files to STP

Our free and fast tool will convert most 3D mesh or GLTF (Graphics Language Transmission Format) model files to a standard STP (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 GLTF files; up to 25 files at a time can be converted.

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

How to Convert your GLTF to STP Online?

Here are two simple steps to convert your GLTF to STP.

Upload a GLTF

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

Download your STP

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

File Format Information for GLTF to STP

ExtensionGLTF
Full NameGraphics Language Transmission Format
Type3D Model
Mime Typemodel/gltf-binary
FormatBinary
ToolsGLTF Converters, 3D Model Voxelizer, Create GLTF Animation, GLTF Asset Extractor, Text to GLTF, GLTF Viewer

Description

The GLTF file format, which can also have the GLB 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 GLTF format is an open standard that is maintained by the Khronos Group.

ExtensionSTP
Full NameSTEP-File
Type3D Model
Mime Typeapplication/octet-stream
FormatBinary
ToolsSTP Converters, 3D Model Voxelizer, Create STP Animation, Text to STP, STP Viewer
Open WithCAD Assistant

Description

The STP file format is a 3D format defined in 1994 and used to store 3D objects for use in computer-aided design (CAD) applications. STP files are text-based, formatted files containing one command per line, with a full 3D model comprising of many commands.

Although STP files are widely supported by most CAD applications, the 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 and time-consuming to process.

Comparing GLTF and STP Features

 

GLTF 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

STP 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 GLTF file format to STP 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 GLTF file to a valid STP 3D model. Let's start with the conversion process, which involves the following steps:

Step 1: Read the Source GLTF File

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

When our tool reads this 3D data, all we are interested in are the vertices, faces, and normals, as this is the only data that can be accurately converted into the final STP file.

The GLTF file can contain other data, such as material definitions and textures, that describe how a particular set of 3D geometry should be rendered. As we are creating an STP file, which does not support materials and textures, we will be ignoring this data if it is present in the GLTF file.

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

Step 2: Process File Data

With the GLTF 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 STP format.

Step 3: Saving to the STP 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 STP format.

Frequently Asked Questions

How can I convert my GLTF file to STP?

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

How long does it take to convert my GLTF to STP?

We aim to process all GLTF to STP 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 GLTF to STP 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 GLTF to STP on ImageToStl.com?

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

No. All our conversion tools process your GLTF 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 STP file quickly.

Can I convert my GLTF to STP on Windows, Linux, Android, iOS or Mac OS?

Yes! Our GLTF to STP 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 GLTF 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 GLTF to STP?

Yes. When you have converted your GLTF to STP, 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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