Upload and view CAD and 3D files online

Open supported CAD and 3D files in our online 3D model viewer without installing desktop viewing software. Rotate, zoom and inspect geometry, check dimensions and share a viewer link with colleagues or customers.

From upload to interactive view

  1. Upload your model

    Choose a supported CAD or 3D file and upload it to 3DViewerOnline. Check the format requirements before uploading.

  2. Explore the details

    Rotate your model, zoom into individual features and use the viewing tools to inspect its geometry. Check dimensions with the available measurement tools.

  3. Share the view

    Send a model link to a colleague or customer so they can explore it in their browser. For more detailed feedback, discover the team review and commenting options.

Inspect geometry and check dimensions

Get a clearer understanding of a model by exploring it from different angles. Move from an overall view to the details you need to inspect.

See the model from every angle

Rotate, pan and zoom to examine features that can be difficult to understand in a flat image. Use the available preset views to change your perspective.

Check dimensions in the viewer

Use the measurement tools to inspect dimensions directly on the model. See the tools in action in our measurement guide.

An online viewer for CAD and 3D files

STEP and IGES files

Open CAD models supplied by customers, colleagues or suppliers and inspect their geometry in your browser.

STL files

View STL models, inspect their shape and explore measurement tools before sharing the model with someone else.

OBJ and other supported formats

Check whether your file format is supported and review any preparation requirements before uploading.

Share a 3D model with a link

Let someone explore your model instead of relying on screenshots alone. Share a viewer link so colleagues and customers can rotate, zoom and inspect the model in their browser.

Need to discuss a detail or gather feedback? Explore the team features for reviewing models with comments, markups and supporting files.

Sharing controls and shareable link for an online 3D model

Questions about viewing 3D files online

What is an online 3D model viewer?

An online 3D model viewer lets you open and explore supported 3D files in a web browser. With 3DViewerOnline, you can rotate, zoom, inspect geometry, use measurement tools and share models through viewer links.

Do I need to install software?

You do not need to install desktop viewing software to use 3DViewerOnline. Open the service in your browser and follow the upload process to view a supported model.

Which CAD and 3D file formats can I view?

3DViewerOnline supports formats including STEP, IGES, GLTF, 3MF, STL, OBJ and more. Visit the supported-formats guide for the full list and any format-specific requirements.

Can I measure a 3D model online?

Yes. The viewer includes measurement tools for inspecting model dimensions. Visit our measurement guide for a practical walkthrough.

Can I share a model with someone else?

Yes. You can share a viewer link so another person can explore the model in their browser. For comments and more detailed feedback, see the team review features.

What should I check before uploading a file?

Check that the file format is supported and that your file meets the upload requirements for your account. Consult the format guide for any additional preparation steps.

Do I need an account to upload a model?

Yes. You can create a free account an upload up to 10 models. Please check the Plans page for more information.

What file size can I upload?

You can upload files up to 50 MB with a free account, and up to 100 MB with Premium or Business account.

Open your next 3D model in your browser

Upload a supported file, inspect its geometry and share an interactive view.