To batch convert HTML files to PDF, you can download IceCream PDF Converter and press the To PDF option from the main menu.

This library exports a method allowing conversion of HTML to PDF. When invoked with a valid HTML template as the first argument, a Buffer is returned containing a PDF document, along with the ...

Creating a PDF file from HTML can be done using iText Java library. iText has an add-on that enables converting HTML to PDF document. This post shows how to use iText to convert HTML to PDF.