sng

Convert PNG images to/from text representation for lossless editing

brewmacoslinux

Try with needOr install directly

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Enable lossless editing of PNGs via a textual representation

sng

Convert a PNG image to a text-based SNG format$ sng input.png > output.sng

Convert an SNG text file back to PNG format$ sng output.sng > result.png

View the textual representation of a PNG file$ sng image.png | head -20