Convert PNG ANIMATED to PNM

Animated PNG is a file extension for animated raster graphics. Developed as an extension of the Portable Network Graphics (PNG) format, Animated PNG allows for animation while maintaining PNG's lossless compression and transparency features. Introduced by Mozilla in 2004, it initially garnered limited support but gained traction for its compatibility and efficiency. Animated PNG is ideal for web usage, offering animation without the substantial file size of GIFs, making it suitable for high-quality web animations and UI elements.

The PNM (Portable Anymap) file extension, developed by Jef Poskanzer in the 1980s, stands for Portable Any Map. It is an uncompressed raster graphics format designed for portable image storage and exchange, encompassing three sub-formats: PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap). PNM files store image data in plain text or binary format, ensuring easy usage across different platforms and applications. This format is widely supported by various image editing software and is valued for its simplicity and lossless compression.