uMark Lite enables you to add a text or image watermark to your digital photos. You can choose from 9 pre-defined watermark placements, set a custom font, size, and color, as well as opacity level. The freeware version can batch process up to 50 images in a single run. The watermarked images are saved in a new folder, so your originals remain unchanged. 50 images at a go, adds uMark Lite watermark.