STEP ViewerHow to UseFile InformationFile FeaturesFAQOther STEP ToolsLatest News

View CAD/3D STEP files Online

Use our free tool to view your 3D STEP CAD files online without needing to install any specialist 3D viewing software. Our STEP viewer tool will generate a real-time 3D preview of your STEP file with pan and zoom controls, allowing you to see your 3D model from any angle. If your STEP file is compressed, you can use our STPZ viewer.

Our STEP viewing tool can load most STEP files, and we are working on improvements all the time to improve compatibility and enhance rendering quality. 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 STEP File Online?

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

Upload an STEP

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

View your STEP

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

File Format Information for STEP

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


The STEP file format is a 3D format defined in 1994 and used to store 3D objects for use in computer-aided design (CAD) applications. STEP files are text-based, formatted files containing one instance per line.

Although STEP 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.

STEP 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

Frequently Asked Questions

How can I view my STEP file online?

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

How long does it take to view my STEP file?

We aim to process all STEP 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 STEP file viewer?

We aim to create the most accurate rendition of your STEP 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 STEP file on

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

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

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

If my STEP file is compressed, can I still use it?

Yes. If your STEP file is compressed, our tool will detect this automatically and load the 3D model from the STEP file as normal.

© 2024 ImageToStl. Convert your PNG and JPG Files to 3D STL files.

Your files are ready to download!