# Getting started with 3D models
You can upload large 3D models to Cognite Data Fusion (CDF) to better visualize and contextualize data. CDF automatically analyzes and optimizes the 3D models to enable devices with different form factors to render the models at high frame rates and with great detail.
We currently support CAD files from common systems and in standard formats such as Navisworks, STEP, Solidworks, RVM, OBJ, and FBX.
Cognite's REVEAL 3D Web Viewer SDK (opens new window) allows you to integrate 3D model visualizations in any web-based application. Users can view and interact with the 3D models in a web browser on desktop and mobile devices, and in Cognite applications such as Asset Data Insight and InField.
3D data is organized in models and revisions:
- Models are placeholders for a set of revisions.
- Revisions contain the 3D data.
For example, you can have a model named Compressor and upload different revisions of that model. When you create a revision you need to attach a 3D file. For each new version of the 3D model, you upload a new revision under the same model. Revisions can be published or unpublished so that applications can decide whether or not to list the revision. You can publish multiple revisions at the same time for example for different versions of the model (high detail vs. low detail).