Convert PJPEG to MNG

The PJPEG (Progressive JPEG) is a file extension for images that enhances the standard JPEG format by displaying images in successive waves of increasing detail, improving the user experience during slow network conditions. The JPEG stands for "Joint Photographic Experts Group", the organization that developed the standard in 1992. PJPEG is particularly useful for web applications, as it allows images to appear more quickly and progressively refine in quality, rather than loading from top to bottom like baseline JPEGs.

The MNG (Multiple-image Network Graphics) file extension is a specialized format for animated images, originating from the creators of the PNG format. Developed in 1999, MNG supports features like image sequences, transparency, and JPEG data embedding, making it useful for complex animations and graphics interchange. Primarily utilized in web applications and multimedia presentations, it offers efficient compression and high-quality visual representation, catering to the needs of graphics-intensive environments.