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What are the different types of pdf files?
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There are several different types of PDF files. The most common type is a Portable Document Format (PDF) file, which is a digital representation of a document that can be viewed on any computer or device with a compatible reader application. Another type of PDF file is a tagged PDF, which contains additional metadata such as tags and annotations. A third type is an interactive PDF, which includes features like embedded multimedia objects, links, and forms. Finally, a fourth type of PDF file is a secure PDF, which has encryption capabilities to protect sensitive information.