Generate PDF from HTML Template in Java with OpenHTMLtoPDF
Generate PDF from HTML template in Java with OpenHTMLtoPDF 1.1.97, Thymeleaf or FreeMarker, plus jsoup for broken HTML, page numbers, fonts and safety.
Read and Write PDF in Java with iText 9 (and OpenPDF)
Read and write PDF in Java with iText 9 (text, tables, images, passwords, stamping), the AGPL license explained, and OpenPDF as an LGPL option.