the smallest possible "valid" png

create.py

# as far as I know this is the smallest possible "valid" png
open("new.png", "wb").write(b'\x89PNG\r\n\x1a\n\0\0\0\rIHDR\0\0\0\1\0\0\0\1\1\0\0\0\x007n\xf9$\0\0\0\1IDAT0')
# I use it to hide files inside "photos" to send on platforms that won't send executable etc. like so:
open("new.png", "wb").write(b'\x89PNG\r\n\x1a\n\0\0\0\rIHDR\0\0\0\1\0\0\0\1\1\0\0\0\x007n\xf9$\0\0\0\xffIDAT' + open("./snake.com", "rb").read())