How to set the function of adding text watermark to upload images to upload?

lancwp

How to set the function of adding text watermark to upload images to upload?

File upload

Link to test case:
Debugger code (debug.datatables.net):
Error messages shown:
Description of problem:

allan

This is with the Editor upload and our server-side libraries is it? You would need to use a custom upload action at the server-side to modify the image with an image processor (ImageMagick for example), to add your watermark and then save onto the server.

Regards,
Allan