Limitations and Constraints

Table 1 lists the document and image watermarks supported by the DSC.

**Table 1** Supported document/image watermark types
Document/Image Watermark Carrier	Office (Windows and macOS)	WPS (Windows, macOS, Linux, and mobile OSs)	Adobe Reader	Chrome and Edge	Foxit PDF
PDF	-	√	√	√	√
WORD	√	√	-	-	-
EXCEL	√	√	-	-	-
PPT	√	√	-	-	-

The symbol √ indicates that the carrier is supported by software.

DSC APIs do not support inserting or extracting watermarks for OBS data. To perform watermark-related operations on OBS bucket data, store the data to the local PC and then call DSC APIs. The watermarked document will be returned in the response body.
For more details of API constraints, see the API Description section.