see below links
http://www.sautinsoft.com/products/pdf-focus/convert-pdf-to-html-in-dotnet.php [paid api]
Editor, DotNetSpider MVM
Microsoft MVP 2014 [ASP.NET/IIS]
following is the link for more information
If you want to covert html to PDF
You can get Community Edition (FREE) tool to Html To Pdf.
The free html to pdf converter offers most of the features the professional sdk offers, the most notable limitation is that it can only generate pdf documents up to 5 pages long.
Please try the following link you can get more details.
Direction is important than speed
More details can be found here: