What is the purpose of format migration in digital preservation?

The purpose of format migration in digital preservation is to convert files to new formats to ensure future accessibility. As technology advances, file formats may become obsolete or unsupported by current systems. By migrating these files to new, more widely supported formats, digital preservationists can help safeguard the information contained within these files for future use. This process not only helps in maintaining accessibility but also ensures that the integrity and usability of the digital content are retained over time, allowing ongoing access to digital resources as technology evolves.

The other options do not capture the primary intention of format migration. Upgrading visual quality pertains more to enhancement rather than access preservation, synchronizing files focuses on ensuring consistency across devices rather than long-term preservation, and compressing files targets storage efficiency rather than the need for format compatibility or longevity. Each of these aspects may be relevant in digital management but does not align with the central goal of format migration in the context of digital preservation.