Copyright Watermark Tool

Well, this is basically a simple web app that adds copyright watermarks to your images. You know how you need to protect your photos? This does that for you.

What it does

• Works with PNG, JPG, and JPEG files
• Lets you type whatever copyright text you want
• You can make the watermark more or less see-through
• Has a clean interface that's kinda like Apple's design
• Just drag and drop your files
• Downloads the watermarked image automatically
• Works on your phone too

How to get it running

You'll need Python 3.12 and the uv package manager. That's it.

1. Download or clone this thing to your computer
2. Go to the folder:

   cd copyright-app

3. Install the stuff it needs:

   uv sync

How to use it

For development (debugging mode):

# Copy the example environment file
cp env.example .env
# Start the app
uv run python main.py

For production:

# Set up your environment file
echo "ENV=production" > .env
echo "SECRET_KEY=your-super-secret-key-here" >> .env
echo "DEBUG=false" >> .env
# Run it
uv run python main.py

Then just go to http://localhost:8080 in your browser.

1. Upload an image (PNG, JPG, or JPEG)
2. Type your copyright text (it starts with "© 2024 Your Name")
3. Move the opacity slider to make it more or less transparent
4. Click "Add Copyright & Download"

That's literally it.

Environment settings

The app uses a .env file for configuration. Copy env.example to .env and change what you need:

ENV=development          # or production
SECRET_KEY=your-key-here
HOST=0.0.0.0
PORT=8080
DEBUG=true              # false for production

How it actually works

The app puts your copyright text in the bottom-right corner of your images. It adds a semi-transparent background so you can actually read the text. The original image quality stays good.

Your processed images get "copyright_" added to the front of the filename.

Deploying to a server

This thing runs on basically any Linux server. It automatically finds fonts that work on different systems. If you're running it in production:

1. Set ENV=production in your .env file
2. Change the SECRET_KEY to something random
3. Set DEBUG=false
4. Make sure your server has the required fonts (most Linux servers do)

Common deployment commands:

# For systemd service
sudo cp your-service-file.service /etc/systemd/system/
sudo systemctl enable your-service-file
sudo systemctl start your-service-file
# Or just run it directly
nohup uv run python main.py &

What's inside

copyright-app/
├── app.py              # Main Flask app
├── main.py             # Entry point
├── config.py           # Configuration handler
├── templates/
│   └── index.html     # The web interface
├── env.example        # Environment file template
├── pyproject.toml     # Dependencies
└── LICENSE            # MIT License

Making changes

Watermark position

You can move where the copyright appears by editing the add_copyright_to_image() function in app.py:

# Change these numbers to move it around
padding = 20
x = img.width - text_width - padding  # right side
y = img.height - text_height - padding  # bottom

The look and feel

All the styling is in templates/index.html. It uses Apple's system fonts and has that clean, modern vibe.

Security stuff

• Files can't be bigger than 16MB
• Only PNG, JPG, and JPEG files work
• Everything gets processed in memory
• Temporary files get cleaned up automatically
• Make sure you change the secret key if you're putting this on the internet

License

MIT License. Do whatever you want with it.

Requirements

• Flask: The web framework
• Pillow: For image processing
• Python 3.12 or newer

That's really all there is to it. Simple tool for a simple job.