Groupdocs.watermark API allows you to search the possible watermarks placed in any document. You can also search the watermarks that are added using some third-party tool. The found possible watermarks can be removed or their properties can be changed. For more details please refer to the following guides:
Searching watermarks Modifing found watermark properties Removing found watermarks...Parser Product Solution GroupDocs.Watermark Product Solution GroupDocs...GroupDocs Documentation / GroupDocs.Watermark Product Family / GroupDocs...