pnger
Convert data into, and back out of, functioning PNG format images
No dependencies outside of stdlib! Doesn't even require PIL/Pillow.
pnger converts arbitrary binary data in and out of png format. Call it from command line or
import it and use png_to_file(input, output) and file_to_png(input, output)
since data is first converted to base64, it works with just about anything ive tried (ttf fonts, mp3s, binary executables...), even into
the hundreds of megabytes, without corruption. Shoutout to 'bin2png' and 'pypng'!
I learned (most) everything from these two projects: https://github.com/ESultanik/bin2png and https://github.com/drj11/pypng
To use:
python3 pnger.py <input file> outputfilename.png
To convert a PNG back to data:
python3 pnger.py pngfile.png <output file>
...what's super cool is that the output image ends up smaller! than the input file, due to zlib compression:
user@x230:~/pngerstudy$ du test.png tmp.mp3
5732 test.png
5780 tmp.mp3
Also check out the successor to this, https://github.com/rocket-pig/pnger-js pnger in javascript, which has a live demo at http://promptism.neocities.org/pnger.html