This REST API allows adding text watermarks to the document.
With this API you can add watermarks with following features:
For a text watermark, you can use various text options like Font, Size, Style, Foreground and Background colors, etc.; 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....Viewer Product Solution GroupDocs...