But what does it actually do? And why would anyone need to “decrypt” a PNG — a format designed for lossless image compression, not encryption?

if == " main ": xor_decrypt("encrypted.png", "decrypted.png", 0xAA)

Need a practical guide to building your own PNG analysis toolkit? Stay tuned for Part 2.

Real‑world PNG encryption often involves AES, custom chunk ordering, or LSB steganography — requiring far more complex logic. The Ethics of PNG Decryption Decrypting a PNG you own or have explicit permission to analyze is fine. Decrypting a PNG to bypass access controls or steal data is not .