
A font-embedding/replacement system to allow fonts to travel with the documents.

The PDF combines three technologies: A subset of the PostScript page description programming language, for generating the layout and graphics. It was derived from JavaScript, but as of 2017 many programming languages include code to generate and parse JSON-format data. JSON is a language-independent data format. JSON is a very common data format used for asynchronous browser-server communication, including as a replacement for XML in some AJAX-style systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it.

The Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems.

In computing, JavaScript Object Notation or JSON is an open-standard file format that uses human-readable text to transmit data objects consisting of attribute-value pairs and array data types (or any other serializable value). Application/pdf, application/x-pdf, application/x-bzpdf, application/x-gzpdf
