Convert all images from png/jpeg to heif

convert.sh

# Convert .png and .jpeg files to .heif format, ensuring "xcassets" is in the path
# Depending on what folder your icons are in, you may wish to append ' -not -path "*/Icons/*"' to that find command so you don't convert all your icon assets.

find . -path "*xcassets*" \( -name "*.png" -o -name "*.jpeg" \) | while read -r file; do
  # Get the filename without the extension
  filename="${file%.*}"
  
  # Run the magick command to convert the file to .heif
  /opt/homebrew/bin/magick "$file" "$filename.heif"
  rm "$file"
  # Print a message indicating the conversion
  echo "Converted $file to $filename.heif"
done

# Replace "png" and "jpeg" with "heif" in .json files, ensuring "xcassets" is in the path and excluding "*/Icons/*"
# Same warning as above!
find . -path "*xcassets*" -name "*.json" | while read -r file; do
  # Check if the file contains "png" or "jpeg"
  if grep -qE "png|jpeg" "$file"; then
    # Use sed to find and replace "png" and "jpeg" with "heif" in the file
    sed -i '' 's/png/heif/g; s/jpeg/heif/g' "$file"
    # Print a message indicating the replacement
    echo "Replaced 'png' and 'jpeg' with 'heif' in $file"
  fi
done