Convert EPUB to PDB GRAPHICS

The EPUB (Electronic Publication) file extension is a widely utilized format for digital books and publications, leveraging its versatility across various e-readers and devices. Officially established by the International Digital Publishing Forum (IDPF) in 2007, it superseded the Open eBook standard. EPUB's structure allows for reflowable content, meaning text can adapt to different screen sizes, enhancing readability. It supports multimedia elements, such as images, videos, and interactive features, making it suitable for diverse digital publications beyond conventional eBooks. EPUB's adoption stems from its open standard, promoting broad compatibility and ease of access in the digital publishing landscape.

The PDB (Palm Database ImageViewer) file extension is a format used primarily in Palm OS devices for storing bitmap images. Known also as FireViewer or TinyViewer format, it supports grayscale images with 2, 4, or 16 shades and can be uncompressed or use RLE compression. This format was integral to Palm OS applications like Image Viewer III, facilitating efficient image storage and viewing on early mobile devices.