The shape used to crop the image.

![](https://www.gstatic.com/images/branding/productlogos/chat_2023q4/v1/192px.svg) ![](https://www.gstatic.com/images/branding/productlogos/gsuite_addons/v6/192px.svg) Available for Google Chat apps and Google Workspace add-ons.

| Enums ||
|---|---|
| `SQUARE` | Default value. Applies a square mask to the image. For example, a 4x3 image becomes 3x3. |
| `CIRCLE` | Applies a circular mask to the image. For example, a 4x3 image becomes a circle with a diameter of 3. |