This REST API allows adding watermarks inside the documents.
With this API you can add watermarks with following features:
The watermark could be either a text or an image: 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; For a Text watermark, you can use various text options like Font, Size, Style, Foreground and Background colors, etc....LockWatermarks Indicates whether editing of the watermark in PowerPoint...LockWatermarks Indicates whether editing of the shape in Word is forbidden...