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spvkgn/imagemagick_tips.sh

Last active March 3, 2025 06:27
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imagemagick tips
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imagemagick_tips.sh
#!/bin/sh
# resize
mogrify -format jpg -strip -interlace plane -sampling-factor 4:2:0 -define jpeg:dct-method=float -density 300x300 -resize 50% -quality 85 -path /tmp *.jpg
convert -format jpg -strip -interlace plane -sampling-factor 4:2:0 -define jpeg:dct-method=float -density 300x300 -resize 50% -quality 85 file.jpg
# crop
magick mogrify -crop 1280x360+0+360 +repage *.png
magick mogrify -crop 1920x540+0+540 +repage *.png
# trim black background https://imagemagick.org/discourse-server/viewtopic.php?f=4&t=35579
magick mogrify -fuzz 5% -define trim:percent-background=50% -trim *.png
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