encode_image.sh•1.98 kB
#!/bin/bash
# Check if an image file is provided
if [ $# -lt 1 ]; then
echo "Usage: $0 <image_file> [output_file]"
echo "Example: $0 test.png base64_output.txt"
exit 1
fi
IMAGE_FILE="$1"
OUTPUT_FILE="${2:-}" # Use the second argument as output file, if provided
# Check if the image file exists
if [ ! -f "$IMAGE_FILE" ]; then
echo "Error: Image file '$IMAGE_FILE' does not exist."
exit 1
fi
# Get the file extension and determine MIME type
FILE_EXT="${IMAGE_FILE##*.}"
MIME_TYPE="application/octet-stream" # Default MIME type
case "$FILE_EXT" in
png|PNG)
MIME_TYPE="image/png"
;;
jpg|jpeg|JPG|JPEG)
MIME_TYPE="image/jpeg"
;;
gif|GIF)
MIME_TYPE="image/gif"
;;
webp|WEBP)
MIME_TYPE="image/webp"
;;
*)
echo "Warning: Unknown file extension. Using generic MIME type."
;;
esac
# Convert image to base64
echo "Converting '$IMAGE_FILE' to base64..."
# Different commands based on OS
if [ "$(uname)" == "Darwin" ]; then
# macOS
BASE64_DATA="data:$MIME_TYPE;base64,$(base64 -i "$IMAGE_FILE")"
else
# Linux and others
BASE64_DATA="data:$MIME_TYPE;base64,$(base64 -w 0 "$IMAGE_FILE")"
fi
# Output the base64 data
if [ -n "$OUTPUT_FILE" ]; then
# Save to file if output file is specified
echo "$BASE64_DATA" > "$OUTPUT_FILE"
echo "Base64 data saved to '$OUTPUT_FILE'"
echo "Total length: ${#BASE64_DATA} characters"
else
# Display a preview and length if no output file
echo "Base64 Image Data (first 100 chars):"
echo "${BASE64_DATA:0:100}..."
echo "Total length: ${#BASE64_DATA} characters"
echo ""
echo "To use with MCP server in multi_image_analysis:"
echo '{
"images": [
{
"url": "'"${BASE64_DATA:0:20}"'... (full base64 string)"
}
],
"prompt": "Please describe this image in detail. What does it show?",
"model": "qwen/qwen2.5-vl-32b-instruct:free"
}'
fi
exit 0
