Batch image resizing with Imagemagick
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This tutorial shows you how to list your images in a csv file and resize every image in that list automatically.
WHOOO! AUTOMATION! 🎉
Imagemagick
ImageMagick is a free and open-source software suite for displaying, converting, and editing raster image and vector image files.
Prepare the scripts
- Log in your Linux system
- Run the following command in your bash console to list every JPG in the specified folder recursively and save it into a csv file
find /home/project/ -name "*.jpg" -print| while read LINE; do echo "$LINE" ; done > list_with_images.csv
- Create a file named "resize_with_imagemagic.sh"
# define the settings
export MAGICK_THREAD_LIMIT=1;
export MAGICK_THROTTLE_LIMIT=100;
export MAGICK_MEMORY_LIMIT=500mb;
start=0;
end=$(cat $1 | wc -l)
loop through every line of the given file
while read file; do
echo "[x] Optimizing $file"
echo $(($end-$((++start)))) elements remaining of $end
replace="_optimized.jpg"
targetFile="${file/.jpg/_optimized.jpg}"
echo "Optimizing $file to $targetFile"
convert "$file" -resize 1920 "$targetFile"
# let the CPU rest for 10 sec
sleep 10
done < $1
You can edit the script to your liking. it doesn't replace the original image, but creates a new one with a postfix of "_optimized".
Original: test_image.jpg
Optimized: test_image_optimized.jpg
Run the script
sh resize_with_imagemagic.sh list_with_images.csv
Learn more about Linux bash tricks
Posted from my blog with SteemPress : http://mpawirodinomo.abovenormal.co/2019/05/batch-image-resizing-with-imagemagick/
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Thank you, this tutorial is very helpful, for more attention you cold add the tag #opensource and #tutorial next time.
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