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View 3D STP Files Online

Use this free tool to view your 3D STP (STEP-File) files online without needing to install any software. Our STP viewer tool will generate a real-time 3D preview of your STP file with Pan and Zoom controls, allowing you to see your 3D model from any angle.

Our STP viewing tool can load most STP 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.

How to View your STP File Online?

Here are two simple steps to display your STP file in any web browser.

Upload an STP

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

View your STP

Once processed, your STP file will be displayed in the web browser.

Frequently Asked Questions

How can I view my STP file online?

First, click the "Upload..." button and select the STP file you wish to view. Once your STP file has been received it will be displayed in your browser.

How long does it take to view my STP file?

We aim to process all STP file viewing requests as quickly as possible, this usually takes around 5 seconds but can be more for larger or more complex files so please be patient.

How accurate is the STP file viewer?

We aim to create the most accurate rendition of your STP file with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to view my STP file on

Yes, of course! We do not store the STP file you submit. The generated preview file within your browser is deleted after 15 minutes,

Can I view my STP file on Windows, Linux, Android, iOS or Mac OS?

Yes! Our STP file viewer will run on any system with a modern web browser. No specialist software is needed to use our file viewing tools.

STP 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 STP

Full NameSTEP-File
Type3D Model
Mime Typeapplication/octet-stream
ToolsSTP Converters, 3D Model Voxelizer, Create STP Animation, Text to STP, STP Viewer
Open WithCAD Assistant


The STP file format, which can also be found with the extension STEP, 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 instance per line.

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.

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