PDF is the most popular file format that prevent the unauthorized user to edit the document. Post Script is the basis of PDF file. It is a page description language that runs on interpretive program to create generate images. It is a communication medium between various applications like PDF, word document etc.
Post script is completely different from PDF as it acts like programming language for creation of images. You can create PDF file from the source of the Post Script file. So we can say that PDF follows the instruction of Post Script. PDF file is of compressed size as compared to Post Script. In PDF files you can insert multimedia elements and hyperlinks which make it more versatile than a Post Script. The main difference in PDF and Post Script is that, Post Script encloses the commands that pages can affect the other pages but this does not happens in PDF format. PDF files remain unaffected by changing any page of the document. There are various application on web that can convert PDF to postcript like PDF Converter and many more.
Post script is completely different from PDF as it acts like programming language for creation of images. You can create PDF file from the source of the Post Script file. So we can say that PDF follows the instruction of Post Script. PDF file is of compressed size as compared to Post Script. In PDF files you can insert multimedia elements and hyperlinks which make it more versatile than a Post Script. The main difference in PDF and Post Script is that, Post Script encloses the commands that pages can affect the other pages but this does not happens in PDF format. PDF files remain unaffected by changing any page of the document. There are various application on web that can convert PDF to postcript like PDF Converter and many more.

