poprhythm
cc9353cd61
Check pixel count before processing and skip files that are already at or below 8MP, avoiding unnecessary re-compression.
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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PIXELS=$(~/Applications/magick identify -format "%[fx:w*h]" "$f" 2>/dev/null)
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if [[ -n "$PIXELS" && "$PIXELS" -le "$MAX_PIXELS" ]]; then
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echo "Skipping $f: ${PIXELS}px already within limit"
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continue
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fi
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# Get file size before resizing
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SIZE_BEFORE=$(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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