# Getting Started

## How to model 3D objects

All 3D items need to have a **.glb** format file to sell on MetaMart. In order to create fascinating 3D objects, we recommend using one of these 3rd party modeling software;

* Blender
* Maya
* Cinema 4D

## See in the viewer

You can test and see your .glb file by uploading it to [this GLB viewer](https://gltf-viewer.donmccurdy.com/).

![](https://1907339901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgoPoZUWam0Ta8r8W0IWo%2Fuploads%2FH9lv6gHEUYaUxXTgUYue%2Fimage.png?alt=media\&token=d0fb2852-1b8b-4b3b-8aa3-ff00fb74c8ed)
