This function supports GUI, Code, and API calling mode.

You can add a text or image watermark to the original image.

The Base64 code for URL transmission applies to paths of content and fonts of text watermarks, or paths of image watermarks. It is not advisable to put standard Base64 code directly into the URL for transmission. In Base64 encoding for URL transmission, contents are coded into character strings by standard Base64 code. After verifying these strings, replace the plus sign (+) with hyphen (-), and slash (/) with underline (_). For details about encoding, see those specified in RFC4648.

Operation name: watermark