png2jxl: Convert PNG to lossless JPEG XL with byte-for-byte reconstruction of the original PNG
Summary
png2jxl converts supported PNG images to lossless JPEG XL while enabling byte-for-byte reconstruction of the original PNG. The repository provides installation instructions, a Python API (png_to_jxl, jxl_to_png), CLI usage (encode, decode, check), Pillow integration, and notes on supported formats, limits, and dependencies.