PDF stands for Portable Document Format. It is a generic term that is mostly correlated with Adobe PDF. Adobe PDF represents two-dimensional documents that allow them to be changed independently of the application's software, hardware, and operating system.
Each file is made of all fixed layout 2D documents, including text, fonts, images, and 2D vector graphics. CDF stands for Compound Document Format. It is a document file format that is electric. It was developed by W3C, which the world wide web group. The main international standards organization was put into use specifically to operate the World Wide Web.
It was created to safeguard that industry members had compatibility and accord in the establishment of new standards. Adobe PDF is royalty-free software that permits users to read and write PDF files without Adobe's paying anything. The Open Document Foundation supported Open Document Format. CDF format is still the main format being promoted by the foundation as it still stands.