Easy Watermark is a WordPress plugin designed to automate the process of adding watermarks to images uploaded to the media library. Users can apply watermarks to existing images as well, either individually or in bulk. The plugin supports both text and image watermarks, allowing for customization of position, size, and opacity. Users can choose from various image formats including JPG, PNG, and GIF, with full support for transparency in PNG and GIF files.

The plugin offers advanced features such as the ability to use placeholders in text watermarks, dynamically applying user names and upload dates. Users can select from a range of fonts and adjust text settings including color, angle, and size. Additionally, Easy Watermark allows for watermarking of all standard image sizes, as well as any custom sizes defined by themes or plugins. The option to create backups of images adds an extra layer of security for users.