I need an apps for Nextcloud to show watermark within document with following condition:
1. If the file share to public and download, watermark will show downloaded IP Public
2. If the file share to internal download, watermark will show username who download the file
Watermark will apply to PDF and office document such as: doc, docx, xls, xlsx, ppt, pptx.
You must familiar with Nextcloud and have your own Nextcloud installation.