by William Arin on WordPress.org
Add a custom watermark to your images in the WordPress media library with powerful controls and blending modes.

The main settings page, showing all available options.
AquaMark is a full-featured, professional solution for applying image watermarks to your media uploads.
Built with a modern, robust architecture, it provides extensive control over the appearance and placement of your watermark, ensuring your brand is consistently represented across your site.
The plugin automatically uses the best available image processing library on your server (Imagick for quality, GD for compatibility) to deliver excellent results.
The plugin includes a variety of actions and filters for programmatic customization. For detailed documentation and code examples, please see the DEVELOPER.md file included with the plugin.