Convert DJVU to PCDS

The DjVu file extension, developed by AT&T Labs in 1996, stands for "Digital Journal Viewer". It is designed to store scanned documents and combine text, line drawings, and images with high compression efficiency. DjVu files are widely used for digitizing books, magazines, and historical documents due to their ability to produce smaller file sizes compared to PDF, JPEG, and TIFF formats. This format employs advanced technologies like image layer separation, progressive loading, and arithmetic coding, making it ideal for web distribution and archival purposes.

The PCDS file extension stands for Photo CD Multi-resolution Bitmap Graphics, a format developed by Kodak in 1991 for digitizing and storing high-quality images on CDs. PCDS files were used to store scanned prints and slides, leveraging proprietary encoding to maintain image quality. This format was part of Kodak's Photo CD system, which aimed to provide a reliable method for archiving and accessing digital photographs.