What Is the Mechanism of Creating PDF?

What is the mechanism of creating PDF? How can I create (or invent) a new document type like PDF?

PDF Reader from Kdan Mobile is great for creating a PDF and has many other helpful features too. You can edit, view, convert or sign PDFs with the platform and it's optimized for organizing and keeping all your documents in one place. If you wish to create a PDF, it's simple, you can convert files into PDFs and from PDFs too, an effective dual action tool. It supports conversions from and to Microsoft Office, ePUB, MOBI, HTML and more, making it a versatile PDF platform to use. It’s easy to navigate and can be used on Mac and Windows. Another easy to use PDF creation tool is PDFelement by Wondershare. T offer features that allow you to create, edit and manage your PDFs all in one place. On their site, t have nice clear instructions on how to use the PDF creator feature with a step by step guide. It's fast and easy to use and has many helpful additions. You can download for free or purchase it, purchasing will give you more features. PDFfiller is another runner up to the list, it has the same features as its competitors, but what’s great about it is that it's cost effective, and you get access to 21 different tools, creating, editing, converting, you name it. It also allows you to manage all your documents under one roof and is available as an app on your mobile device or on your desktop.