Image edit with ImageMagick

tsu_edit.sh

#!/bin/bash

INPUT_DIR="input"
OUTPUT_DIR="output"
RESIZE_DIMENSIONS="1080x1080"
BLUR_RADIUS="0x50"             # Standard deviation (0 for auto-radius) x Sigma (how much blur)
                               # Adjust Sigma (e.g., 5, 10, 15) for more or less blur
BORDER_SIZE="8"              # Border thickness in pixels for the original image
BORDER_COLOR="white"          # Color of the border

WATERMARK_IMAGE="watermark.png"
WATERMARK_SIZE="100x100"
WATERMARK_OFFSET="+0+0"     # Horizontal + Vertical offset from gravity (e.g., +20+20 for 20px from right/bottom)

mkdir -p "$OUTPUT_DIR"

for photo in "$INPUT_DIR"/*.jpg; do
    if [ -f "$photo" ]; then
        filename=$(basename "$photo")
        output_path="$OUTPUT_DIR/$filename"

        echo "Processing $filename..."
        
        # Creates a blur of the original image and expand it to fill a 1080x1080 canvas
        magick "$photo" \
               -write mpr:original \
               -blur "$BLUR_RADIUS" \
               -resize "${RESIZE_DIMENSIONS}^" \
               -gravity center \
               -extent "$RESIZE_DIMENSIONS" \
               # Copy the original photo and fit it on this canvas, applying a border
               \( mpr:original \
                  -shave "${BORDER_SIZE}x${BORDER_SIZE}" \
                  -bordercolor "$BORDER_COLOR" \
                  -border "${BORDER_SIZE}" \
                  -resize "${RESIZE_DIMENSIONS}>" \) \
               -gravity center \
               -composite \
               # Apply a watermark image on the bottom-right corner of the image
               \( "$WATERMARK_IMAGE" -resize "${WATERMARK_SIZE}>" \
               -channel A -evaluate multiply 0.5 +channel \) \
               -gravity southeast \
               -geometry "$WATERMARK_OFFSET" \
               -composite \
               "$output_path"
    fi
done

echo "All photos processed."