What does the acronym "PDF" stand for?

The acronym "PDF" stands for Portable Document Format. This format was developed by Adobe in the early 1990s to enable users to capture and view documents regardless of the hardware, software, or operating system used to create them. The key feature of PDFs is their ability to preserve the original formatting of a document, including text, fonts, images, and graphics, making them ideal for sharing and printing. They maintain layout integrity, ensuring that the document appears the same on all devices and platforms, which is crucial for professional and formal documents.

The other options do not accurately reflect what PDF represents. For instance, "Print Document Format" and "Portable Design File" fail to capture the primary purpose and characteristics of the PDF format. Similarly, "Public Document Feed" does not relate to the concept of document portability and functionality that is inherent to the PDF. The universally recognized nature of the term "Portable Document Format" underscores its widespread application in digital document sharing and archiving.