Create a Python script to watermark images

Here’s a Python script that adds a watermark to images using the Pillow library. This script works for PNG, JPEG, and other common formats:

python
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from PIL import Image, ImageDraw, ImageFont
import os

def add_watermark(input_image_path, output_image_path, watermark_text, position='bottom_right', opacity=128):
    base = Image.open(input_image_path).convert("RGBA")

    # Make a blank image for the watermark with an alpha layer (RGBA)
    watermark_layer = Image.new("RGBA", base.size, (255, 255, 255, 0))
    width, height = base.size

    # Choose a font and size
    font_size = int(min(width, height) / 20)
    font_path = "/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf"  # Update this path based on your system
    font = ImageFont.truetype(font_path, font_size)

    # Initialize ImageDraw
    draw = ImageDraw.Draw(watermark_layer)

    # Get text size
    text_width, text_height = draw.textsize(watermark_text, font)

    # Calculate X, Y position
    margin = 10
    if position == 'bottom_right':
        x = width - text_width - margin
        y = height - text_height - margin
    elif position == 'bottom_left':
        x = margin
        y = height - text_height - margin
    elif position == 'top_right':
        x = width - text_width - margin
        y = margin
    elif position == 'top_left':
        x = margin
        y = margin
    else:
        x = (width - text_width) // 2
        y = (height - text_height) // 2

    # Draw text with opacity
    draw.text((x, y), watermark_text, fill=(255, 255, 255, opacity), font=font)

    # Combine original with watermark
    combined = Image.alpha_composite(base, watermark_layer)

    # Convert back to RGB and save
    combined = combined.convert("RGB")
    combined.save(output_image_path)

# Example usage
if __name__ == "__main__":
    input_img = "input.jpg"
    output_img = "watermarked_output.jpg"
    watermark = "© YourBrand"
    add_watermark(input_img, output_img, watermark)

Notes:

• Font path must be updated depending on your OS. For Windows, you might use a font path like: C:\Windows\Fonts\arial.ttf.

• Adjust opacity, font size, and position as needed.

• Supports batch processing with minor modifications.

Let me know if you want a batch version to watermark multiple images in a folder.