Long-term archiving Will future developments to the PDF/A standard make current PDF/A versions obsolete? a PDF file can generally conform to both PDF/A and PDF/X, but for maximum compatibility with modern PDF/X files, PDF/A-2 is highly recommended due to its support for transparency and layers.

The PDF/A and PDF/X standards are fundamentally compatible i.e. How are PDF/A and PDF/X related to each other? PDF/A allows users to save various metadata (for example the copyright) in the document using Extensible Metadata Platform (XMP) technology. Can PDF/A files contain copyright information? PDF/A is just another file-format, and provides no special protections against data corruption. File Formats How does PDF/A fare with respect to file corruption? PDF/A forbids dynamic content to ensure that the user sees the exact same content both today and for years to come. Unlike normal PDF, PDF/A requires that everything necessary to precisely rendering the document is contained in the PDF/A file, including fonts, colour profiles, images and so on. PDF/A is an ISO-standardized subset of PDF that eliminates certain risks to the future reproducibility of the content. Up to now we've used 'normal' PDF for archiving digital documents. Digital documents should remain in electronic format, giving the user a wide range of additional features such as full-text search, digital signatures, and so on.

The ability to replace paper with electronic documents is a primary goal of PDF/A.

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