How to Download a PDF File forcefully instead of opening it in a Browser using JS lastIndexOf('/')+1); save.download = fileName || filename; if ( navigator. Saving a pdf as base 64 in the backend makes sense, but to the user it's just a random combination of numbers and letters. Luckily html natively supports  PDF.js. A general-purpose, web standards-based platform for parsing and rendering PDFs. Download Demo GitHub Project. ©Mozilla and individual  16 Feb 2016 I'm not talking here about the simple conversion of HTML to PDF.