The main screen of DropWaterMark allows you to select an image or an image folder to which you want to apply watermarks 

Here is the Watermark Configuration Panel, where you can edit and customize the text for your watermark as well as brightness or transparency options 

The Interactive mode displays a prebiew of the image with the added watermark. Here you can adjust the watermark position, rotation, size and transparency directly on the image 

In the Configuration window you can also set a default watermark type like the creation date, the filename, the meta date, exposure time or shot with 

The Options Panel allows you to set images to be scaled at a specific resolution, to create thumbnails, to preview the image after tranformation or to select a certain image quality for your exported file