Use this free tool to view your 3D CTM (OpenCTM) files online without needing to install any software. Our CTM viewer tool will generate a real-time 3D preview of your CTM file with Pan and Zoom controls allowing you to see your 3D model from any angle.
Our CTM viewing tool can load most CTM files and we are working on improvements all the time to improve compatibility with all file formats. If you are looking to convert your 2D image files to 3D files such as STL then we have a 2D to 3D conversion tool here.
Here are 2 simple steps to display your CTM file in any web browser.
First click the "Upload..." button, select your CTM file to upload. Select any configuration options. When the CTM to STL conversion has completed, you can download your STL file straight away.
We aim to process all CTM to STL 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 CTM file you submit to us. The resulting STL file, once created is deleted 15 minutes after upload and the download link will expire after this time.
Yes! Our CTM to STL 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 CTM 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.
| Extension | CTM |
| Full Name | OpenCTM |
| Type | 3D Model |
| Mime Type | application/x-ctm |
| Format | Binary |
The CTM file format is a 3D triangle mesh format which contains 3D geometry such as vertices, faces and face normals. The format was devised and released in 2010 with the intention of creating 3D models that could be compressed and easily distributed.
The compression methods employed by the CTM format can be lossy and loss-less. The Lossy compression will attempt to simplify the mesh vertices to reduce space needed to store them whilst the loss-less method employs the LZMA compression library. The format has its own dedicated CTM viewer application though the format is not well supported by other 3D modelling applications.
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