This REST API allows adding image watermarks to the document.
With this API you can add image watermarks with the following features:
Image watermark supports various image formats: PNG, GIF, TIFF, JPG. You may upload the desired image to the Storage and then pass the path as a parameter of Watermark operation; There are many watermark positioning and transforming properties; There are format-specific options. These options allow to leverage specific format features and often allow to make watermarks stronger; For protected documents, it is required to provide the password....Metadata Product Solution GroupDocs...