You can use our STL to IDTF conversion tool to quickly and easily convert your 3D model files for free. You may upload up to 20 files at one time, and our batch STL to IDTF converter will process each 3D model and present you with a download link for each file once completed.
Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.
Our 3D model STL to IDTF tool will load your STL file and, where supported, attempt to extract all the relevant 3D features, such as geometry, textures, and animations. To access the 3D conversion configuration options, click the button when you have selected your files. The current options support the ability to voxelize your 3D model and more.
Here are two simple steps to convert your STL to IDTF using our fast and free STL converter tool.
First, click the "Upload..." button and select your STL file to upload. Your STL file will be uploaded to our servers. When the STL to IDTF conversion has completed, you can download your IDTF file right away.
We aim to process all STL to IDTF conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.
We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.
Extension | STL |
Full Name | Standard Triangle Language |
Type | 3D Model |
Mime Type | application/vnd.ms-pki.stl |
Format | Text |
Opens With | Blender, MeshLab, CAD Assistant, DAZ Studio |
The STL, or Standard Triangle Language, file format has been around since the '80s and is supported by most modern 3D modeling applications. In particular, the STL format has become something of a standard format within the area of 3D printing, despite the rise of more modern formats such as 3MF.
STL files come in two flavors: binary or text format. The text format is human-readable, making it easy to perform manual edits, but can lead to very large file sizes. As you can imagine, the binary format is much more compact and represents the majority of the STL files you are likely to encounter.
The format itself is very simple; the 3D model is represented by a sequential list of triangles, with each triangle defined with 3 points consisting of their X, Y, and Z positions, along with an additional vector that contains the face normal (the direction the face is pointing). There is an additional attribute block for each triangle; however, this is largely unused and thus unsupported.
STL Converter Capabilities
When converting 3D model or mesh files using our STL converter, we will attempt to convert color materials into a suitable format for use in the converted file.
Extension | IDTF |
Full Name | PDF With integrated 3D Models |
Type | 3D Model |
Mime Type | text/plain |
Format | Text |
An IDTF file is a specialized format for storing 3D models with the intention of embedding them within an Adobe PDF file, thus enabling a PDF to contain and display complex 3D models.
The file format itself is a simple ASCII text file containing 3D model data in the form of vertices, faces, normals, and other relevant geometric data. The data is stored within a hierarchical structure, enabling easy improvements to the format in the future.
Currently, support for IDTF files is limited among 3D modeling applications, with the freely available IDTFConverter application capable of processing IDTF files for use within PDF documents.
Your STL file will be converted to a IDTF file using our unified 3D model and mesh conversion tool. Our STL 3D tool performs accurate conversions of 3D elements such as vertices, faces, normals, and relevant material information. As STL supports color materials and IDTF does not, our tool will not attempt to transfer any color information; your final 3D model will contain geometry data only.