# Excel Template Demo

This example demonstrates how to use Spread.Services as server spreadsheet model, and use Spread.Sheets as client side viewer or editor:

- Spread.Services will first open an excel file existing on server.
- Spread.Services then inoke ToJson and transport the ssjson to client side.
- In browser, Spread.Sheets will invoke fromJSON with the ssjson from server.
- Then, you can see the content of the excel template in Spread.Sheets.
- At same time, you can fill or edit data on the template through Spread.Sheets.
- At last, you can download to view the changes in excel file.