Xtool -mpng+reflate Extra Quality Official

xtool is not a standard, widely known mainstream utility (like pngtopam or optipng ), but it typically appears in the context of or installers (specifically FreeArc or similar SFX archives).

def reflate_stream(compressed_data, level=6, extract_only=False): """Reflate: decompress then recompress zlib stream""" decompressed = zlib.decompress(compressed_data) if extract_only: return decompressed # raw decompressed data recompressed = zlib.compress(decompressed, level) return recompressed xtool -mpng+reflate

This is a specialized command for maximum compression archiving , not a standard image optimization tool. If you are a user looking to simply reduce image sizes for a website, you should use standard tools like OptiPNG , PNGQuant , or TinyPNG instead. xtool is not a standard, widely known mainstream

A very specific topic!

: Tells xTool to begin an encoding operation for pre-compression. A very specific topic

import struct import zlib import sys from pathlib import Path

: This codec targets PNG files. It doesn't just "compress" the image; it reconstructs the deflate stream within the PNG container. This allows subsequent tools to "see" the raw data more clearly.