Watermarking is a technique used to protect digital content, such as images, videos, and documents, by embedding a visible or invisible mark. This mark can identify the owner or creator of the content, helping to prevent unauthorized use or reproduction. Watermarks can be logos, text, or patterns that are integrated into the media. In addition to copyright protection, watermarking can also serve as a way to verify the authenticity of a document or image. For example, photographers often use watermarks to ensure that their work is credited properly when shared online. This practice helps maintain the integrity of digital content in a world where copying is easy.