/tech/

Image gen like stable-diffusion.cpp embeds generation text and parameters into a tEXt field, but png is big and uses a lot of space, sometimes you want them batch converted to jpeg.

but naive convert from imagemagick/graphicsmagick fails to preserve the image gen parameters, in a way that other image tools can use

this does that
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for f in *.png; do
out="${f%.png}.jpg"
exiftool -b -parameters "$f" > /tmp/params.txt 2>/dev/null
convert "$f" -quality 92 "$out"
exiftool -UserComment="$(</tmp/params.txt)" "$out" >/dev/null
done
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cheers, have a handmaiden