Batch image resizing with Imagemagick

[mpawirodinomo]

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.jpgOptimized: 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/ 

Comments

[followforupvotes]

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[jonycoo]

Thank you, this tutorial is very helpful, for more attention you cold add the tag #opensource and #tutorial next time.

Posted using Partiko Android

[mpawirodinomo]

I will, thank you!