Html2pdf is a service that uses the internet for receiving the html and responding the pdf.

You can render password protected URLs with the following parameters:

HttpUsername
String, Example: user
If your page is user/password protected by HTTP Authentication/Basic Authentication

HttpPassword
String, Example: test
If your page is user/password protected by HTTP Authentication/Basic Authentication

Please see http://html2pdf.seven49.net/Web/en/How_to_useQuick_start/Default.htm