# Template preview settings

You can edit template preview settings in [Publications](https://docs.struct.com/pim3/reference/publications) > [Templates](https://docs.struct.com/pim3/reference/publications/templates) > [Template design](https://docs.struct.com/pim3/reference/publications/templates/edit-template/template-design).

### Product

The product to use for the template preview.

### Language

The language to use for the template preview.

### Segments

The segments to use for the template preview.

### Product catalogue

The product catalogue to use for the template preview.

### Size

The size to render. Defaults to selected template size if not selected. If selected template size is not set either it will default to A4.

### Custom data

Custom data to be included in 'CustomValues' in Data.