poprhythm
651cccc21c
The fx:w*h format returned floats in scientific notation which broke bash arithmetic comparison. Read %w and %h separately instead.
32 lines
1.1 KiB
Bash
Executable File
32 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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#
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# images_resize Resizing large JPGs in current directory
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# Based on: https://shkspr.mobi/blog/2016/12/converting-rar-to-zip-in-linux/
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#
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# Usage: xxx.sh
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echo "Resizing large JPGs in $(pwd)"
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MAX_PIXELS=8000000
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find . -regextype posix-egrep -regex ".*\.(jpg|JPG|JPEG|jpeg)$" -print0 | while IFS= read -r -d '' f
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do
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# Check pixel count before processing
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read -r IMG_W IMG_H < <(~/Applications/magick identify -format "%w %h" "$f" 2>/dev/null)
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if [[ -n "$IMG_W" && -n "$IMG_H" && $((IMG_W * IMG_H)) -le "$MAX_PIXELS" ]]; then
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echo "Skipping $f: ${IMG_W}x${IMG_H} already within limit"
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continue
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fi
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# Get file size before resizing
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SIZE_BEFORE=$(stat -f%z "$f" 2>/dev/null || stat -c%s "$f" 2>/dev/null)
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~/Applications/magick "$f" -resize 8000000@@\> -sampling-factor 4:2:0 -strip -quality 85% "$f"
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# Get file size after resizing
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SIZE_AFTER=$(stat -f%z "$f" 2>/dev/null || stat -c%s "$f" 2>/dev/null)
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# Display before/after sizes
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echo "Resized $f: $(numfmt --to=iec-i --suffix=B $SIZE_BEFORE) -> $(numfmt --to=iec-i --suffix=B $SIZE_AFTER)"
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done
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