# File Tab

A visual breakdown of the File Tab in the SpreadJS Designer Component

## Content

The **File** tab has options for opening and saving files as well as default templates.
![image](https://cdn.mescius.io/document-site-files/images/7719ad0a-f083-46d7-aff6-f63e2e187c15/image.2e35b9.png?width=800)
You can use the **Save** option to save to a JavaScript (.js) file. This file type can only be loaded with the [fromJSON](/spreadjs/api/v18/classes/GC.Spread.Sheets.Worksheet#fromJSON) method.