41 lines
1.1 KiB
Bash
41 lines
1.1 KiB
Bash
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#!/bin/bash
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# Directory to start from (default is current directory if none given)
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DIR="${1:-.}"
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# Optional prefix filter (second argument)
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PREFIX="${2:-}"
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# JPEG/WEBP compression quality (1–100, lower = more compression)
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QUALITY=85
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# Target max size
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MAXSIZE="1920x1040"
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# Recursively find images and compress them
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find "$DIR" -type f \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.webp' \) | while read -r FILE; do
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BASENAME=$(basename "$FILE")
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EXT="${FILE##*.}"
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EXT_LOWER=$(echo "$EXT" | tr '[:upper:]' '[:lower:]')
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# Skip if prefix is set and filename doesn’t start with it
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if [ -n "$PREFIX" ] && [[ "$BASENAME" != "$PREFIX"* ]]; then
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continue
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fi
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echo "Processing: $FILE"
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TMPFILE="$(mktemp --suffix=".$EXT_LOWER")"
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case "$EXT_LOWER" in
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jpg|jpeg)
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convert "$FILE" -resize "$MAXSIZE"\> -strip -interlace Plane -quality $QUALITY "$TMPFILE"
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;;
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png|webp)
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convert "$FILE" -resize "$MAXSIZE"\> -strip -quality $QUALITY "$TMPFILE"
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;;
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esac
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mv "$TMPFILE" "$FILE"
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done
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