What is a PDF file and how do I open it? PDF, an acronym for Portable Document Format, is a file format developed by Adobe Systems in the 1990s. PDFs have become a staple in our digital world, often used for sharing and preserving all sorts of documents, from manuals to eBooks, legal documents, forms, academic papers, and even multimedia presentations. But what exactly is a PDF file, and how can you open it? This blog post answers these questions. Understanding PDF Files PDF files are designed to encapsulate the...