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Convert Your 3D Mesh/Model VTK Files to GLTF

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Our free and fast tool will convert most 3D mesh or VTK (Visualization Toolkit) model files to a standard GLTF (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 VTK files; up to 25 files at a time can be converted.

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

How to Convert your VTK to GLTF Online?

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

Upload a VTK

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

Download your GLTF

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

Frequently Asked Questions

How can I convert my VTK file to GLTF?

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

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

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

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

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

Yes! Our VTK to GLTF 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 VTK 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 VTK to GLTF?

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

I have several VTK files; can I batch convert my VTK to GLTF?

Yes! Our VTK tool supports full batch conversions. You can upload up to 25 and VTK files at a time. Our tool will convert them all as quickly as possible. Once completed, you can either download the GLTF files individually or download them all in a single ZIP file.

Comparing VTK and GLTF Features

 

VTK 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

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

File Format Information for VTK to GLTF

ExtensionVTK
Full NameVisualization Toolkit
Type3D Model
Mime Typeapplication/octet-stream
FormatBinary
ToolsVTK Converters, 3D Model Voxelizer, Create VTK Animation, Text to VTK, VTK Viewer

Description

The VTK file format is a 3D modeling and graphics format supported by the Visualization Toolkit. Created in the '90s, the Visualization Toolkit provides a series of data and visual tools for advanced 3D modeling applications. Some example functions of the toolkit include polygon simplification, mesh repair and smoothing, and more.

The format has evolved over the years. It started out as a simple text-based format that could be edited within a simple text editor. Additional features have been added over the years, with the most recent version of the format supporting an XML-based format.

VTK Notes

Our tool will export only polygon or triangle-strip-based mesh data. Textures and compressed binary data are not supported and will be ignored.

Supported Features

  • Polygon mesh
  • Triangle strip-base mesh
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.

How does it work?

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

Step 1: Read the Source VTK File

In its simplest form, an VTK 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.

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

Step 2: Process File Data

With the VTK 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 GLTF format.

Step 3: Saving to the GLTF 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 GLTF format.

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