Convert APNG (Animated PNG) to PCDS

Animated Portable Network Graphics (APNG) is an extension of the Portable Network Graphics (PNG) format designed to support animated images. Introduced in 2004, APNG allows for animated sequences while retaining backward compatibility with non-animated PNG files. This format is utilized for its lossless compression, making it ideal for web graphics where image quality is paramount. APNG files are widely used for animated icons, logos, and other elements that benefit from high-quality animations without the artifacts common in GIF files. Its concise, efficient structure makes it a preferred choice among developers and designers focused on optimizing web performance.

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.