Star Watermark for Windows is a software application designed to add watermarks to images and videos. It[SQ]s primarily used to protect digital content by visibly marking it with copyright information, logos, or other identifying text or graphics. The software likely offers features like customizable watermark text and image placement, opacity adjustments, and batch processing for adding watermarks to multiple files at once. While I don[SQ]t have access to the specific features of every version, these are typical capabilities for watermarking software.