Add Watermark to PDF
Stamp a text watermark across every page.
About the Add Watermark to PDF
The Add Watermark to PDF tool stamps a diagonal text watermark across every page, with adjustable opacity and size, without uploading your file. It is a quick way to mark a document as a draft, a copy, or confidential before you share it.
Frequently asked questions
It is drawn into the page content, so it is not a separate layer that toggles off — but anyone with PDF editing software could still edit it. For tamper-resistant marking you would need a server-side flatten-and-secure step.