What are some alternatives?
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.
DocRaptor - Forget tedious coding or server management: Our simple API that makes it easy to convert HTML to PDF, XLS and Excel files.
HTML Email - Responsive HTML email templates for startups & developers
HTML2PDF Rocket - Reliable and secure HTML to PDF convertor. Code examples for C#, Ruby, ASP.NET and PHP and more. Easy to use and amazingly fast, free of cost!
Document Cyborg - Easily save a web page as a document (PDF, WORD, EPUB, ODT, RTF or Text)