PDF/A is a special version of the PDF format designed for long-term digital preservation. Unlike regular PDFs, which can include elements that may not be accessible in the future, PDF/A ensures that all necessary information is embedded within the file. This means that fonts, colors, and images are included, making it easier to open and view the document years later, regardless of the software used. The main goal of PDF/A is to keep documents looking the same over time, which is crucial for important records like legal documents, academic papers, and historical archives. By following strict guidelines, PDF/A helps organizations maintain their digital files in a reliable and consistent manner.