PDF button for a non-public web page

just put this script one button will be generated for password protected pages use this one.
<a href="//FreeHTMLtoPDF.com/?convert&iconsize=32&localhtml=1&formdata=1"><img src="//FreeHTMLtoPDF.com/images/apiicon_32.png" /></a><script type="text/javascript" src="//FreeHTMLtoPDF.com/scripts/api.js" />


link - http://freehtmltopdf.com/