GroupDocs.Watermark for Java is a powerful document watermarking API to add image and text watermarks. Furthermore, API works to search and remove the watermarks which were already added to the documents by other third-party softwares. The watermarks added by this API are hard to remove by any third-party tools. It is straight-forward and self-descriptive for integration into the custom applications. The most notable features are: - Add text and image watermarks into documents and images - Search for possible watermarks in documents and remove them - Support various document formats: Pdf; MS Office: Word, Excel, PowerPoint, Visio - Support various image formats: png, bmp, jpeg, jpeg2000, gif, tiff, webp (including multiframe gif and tiff) - Process documents and images attached to stored email messages (msg, oft, eml, emlx formats are supported) - Add watermarks to images inside documents of all supported formats - Two ways of watermark adding/removing are supported: using generalized approach and working with supported format specifics