Help center
Watermark— help & troubleshooting
Add a diagonal or tiled mark.
Open Watermark →- How to add a watermark to a PDF in your browserStamp DRAFT, CONFIDENTIAL, or any short text across every page of a PDF with a diagonal or tiled layout, entirely on your device.
- Watermark troubleshooting: passwords, previews, question marks, and stale settingsFixes for common Watermark tool problems, including password-protected PDFs, missing previews, non-Latin text turning into question marks, and downloads that show old settings.