## What You Should Know
- [![](https://img.shields.io/badge/Download-Offline%20SDK-orange)](https://www.dynamsoft.com/web-twain/downloads)
- [![](https://img.shields.io/badge/Get-30--day%20FREE%20Trial%20License-blue)](https://www.dynamsoft.com/customer/license/trialLicense/?product=dwt)

### Install Express

Run the following script to install Express.

```
npm install
```

### Start the server

We defined the web server logic in the file "app.js", to start it, run the following script:

```
node app.js
```

Note that we have enabled SSL on this server at the port 4443.