pngtools

pngtools is a tiny python library to play and explore PNGs.

It only supports a subset of the PNG format, but it can:

• recover a PNG from the https://en.wikipedia.org/wiki/ACropalypse (CVE 2023-21036) vulnerability.
• convert the png to bitmap file (bmp or ppm)

Links

• https://github.com/Its-Just-Nans/pngtools
• https://its-just-nans.github.io/packages/
• https://pypi.org/project/pngtools/