> ## Documentation Index
> Fetch the complete documentation index at: https://docs.3dpreppro.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Upload your first model

> Drag and drop a 3D file to get started

<Steps>
  <Step title="Go to the home dashboard">
    After signing in, you land on the home page with the upload area front and center.
  </Step>

  <Step title="Drag your file onto the upload area">
    Drag your 3D file directly onto the upload zone — or click **Browse** to pick a file from your computer.

    <Frame>
      <img src="https://mintcdn.com/alphaworks/ovWnUpkEFn4EqZKR/images/getting-started/upload-drag.png?fit=max&auto=format&n=ovWnUpkEFn4EqZKR&q=85&s=e99fbaf9600d209a6fa8e9bdd9734000" alt="Upload area with drag-and-drop highlight" width="2582" height="1364" data-path="images/getting-started/upload-drag.png" />
    </Frame>
  </Step>

  <Step title="Wait for analysis">
    Your model is uploaded and automatically analyzed. Within a few seconds, 360° thumbnail previews appear and your model shows up in the latest uploads section.

    <Frame>
      <img src="https://mintcdn.com/alphaworks/ovWnUpkEFn4EqZKR/images/getting-started/upload-complete.png?fit=max&auto=format&n=ovWnUpkEFn4EqZKR&q=85&s=4f4ddd3f0b5899d894e86ef4d60a2078" alt="Model card appearing after successful upload" width="2494" height="1762" data-path="images/getting-started/upload-complete.png" />
    </Frame>
  </Step>
</Steps>

<Info>
  **Supported formats:** OBJ, STL, 3MF, FBX, PLY, GLTF/GLB, VRM, WRL, DICOM (.dcm), LAS/LAZ. You can also upload **ZIP** and **RAR** archives — we automatically extract the 3D files inside.
</Info>

<Tip>
  Maximum file size is **8 million polygons** per file. For larger models, consider reducing the polygon count in your modeling software before uploading.
</Tip>

<Note>
  **DICOM** (medical imaging) files open the **DICOM Segmentation** dialog after upload, where you define tissue density (HU) ranges to segment the scan into separate 3D parts. Completing this step is required before analysis runs. **LAS/LAZ** (LiDAR point cloud) files upload directly with no extra configuration step. See [Uploading files](/models/uploading-files) for details.
</Note>