Our free and fast tool will convert most 3D mesh or BLEND (Blender) model files to a standard VTK (Visualization Toolkit) 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 BLEND files; up to 25 files at a time can be converted.
To convert your BLEND file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a VTK file and will be ready for download shortly afterwards. For more information about the BLEND to VTK conversion process, see the conversion information section below.
| Extension | BLEND |
| Full Name | Blender |
| Type | 3D Model |
| Mime Type | application/octet-stream |
| Format | Binary |
| Tools | BLEND Converters, 3D Model Voxelizer, Create BLEND Animation, BLEND Asset Extractor, Text to BLEND, BLEND Viewer |
| Open With | Blender |
The BLEND file type is the native 3D graphics file format of the 3D modeling application Blender. Originally released in 1994, Blender has grown over the years and is one of the most popular 3D applications available.
BLEND files store 3D content such as 3D geometry, vertices, faces, normals, animations, materials, and much more. Blender is free and open-source, contains many features you would expect in a high-end 3D editing application, and is available for most current operating systems.
If your BLEND file contains texture files and other texture-related data, these will be included in the conversion process.
| Extension | VTK |
| Full Name | Visualization Toolkit |
| Type | 3D Model |
| Mime Type | application/octet-stream |
| Format | Binary |
| Tools | VTK Converters, 3D Model Voxelizer, Create VTK Animation, Text to VTK, VTK Viewer |
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.
Any model converted to the VTK format will be stored in a triangulated mesh format.
Converting from the BLEND file format to VTK 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 BLEND file to a valid VTK 3D model. Let's start with the conversion process, which involves the following steps:
In its simplest form, an BLEND 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 VTK file.
The BLEND 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 VTK file, which does not support materials and textures, we will be ignoring this data if it is present in the BLEND file.
For more information regarding the BLEND file format, please see this great article that goes into a lot of detail explaining the BLEND format.
With the BLEND 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 VTK 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 VTK format.
We currently support all Blender files compatible with version 4.2. We monitor and update our tool as newer versions become available.
We aim to process all BLEND to VTK 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 BLEND file you submit to us. The resulting VTK 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 BLEND 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 VTK file quickly.
Yes! Our BLEND to VTK 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 BLEND 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 BLEND to VTK, 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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