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Our free and fast tool will convert most 3D mesh or STP (STEP-File) model files to a standard IDTF (PDF With integrated 3D Models) 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 STP files; up to 25 files at a time can be converted.
To convert your STP file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a IDTF file and will be ready for download shortly afterwards. For more information about the STP to IDTF conversion process, see the conversion information section below.
| Extension | STP |
| Full Name | STEP-File |
| Type | 3D Model |
| Mime Type | application/octet-stream |
| Format | Binary |
| Tools | STP Converters, 3D Model Voxelizer, Create STP Animation, Text to STP, STP Viewer |
| Open With | CAD Assistant |
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.
IDTF files, when imported, will be converted to 3D geometry comprising vertices and faces. If the IDTF file contains color information, this will be converted where possible.
The IDTF file format is a bespoke format that enables interactive 3D content to be embedded within a PDF document. Currently, only Adobe Reader and PDF-XChange Editor are able to render PDF documents that contain this 3D content.
IDTF files are a simple text-based format containing 3D geometry defined using vertices and faces in a structured hierarchy. Prior to importing the IDTF file to the PDF, it must be converted to a U3D file format using one of the free applications, such as IDTFConverter.
Currently, only mesh geometry will be carried over from your source model to the final IDTF file for download.
Converting from the STP file format to IDTF 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 STP file to a valid IDTF 3D model. Let's start with the conversion process, which involves the following steps:
In its simplest form, a STP file is a human readable text file file containing 3D data such as shapes, surfaces, curves and other geometric data. When combined, these make up the 3D model you see on your screen.
For more information regarding the STP file format, please see this great article that goes into a lot of detail explaining the STP format.
With the STP 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 IDTF 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 IDTF format.
Yes. If your STP file is compressed, our tool will detect this automatically and load the 3D model from the STP file as normal.
Our STP to IDTF file converter is up to 4x faster than other online or offline file converters, meaning your files are converted quickly and hassle-free. Smaller files are typically converted instantly, while larger files will take longer to process.
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 STP file you submit to us. The resulting IDTF 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 STP 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 IDTF file quickly.
Yes! Our STP to IDTF 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 STP 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 STP to IDTF, 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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