PDF Watermark
Add a text watermark to your PDF and download the updated file Selected files are processed in your browser without sending them to a conversion server. Free; no registration.
Add a PDF
Drag & drop a PDF here, or pick a file using the button.
- Non-Latin text (e.g. Japanese) may not render correctly in the MVP.
- Tiled watermarks can be slow for large PDFs.
Watermark settings
Adjust text, style, and where to apply the watermark.
Overview
Selected files are processed in your browser without sending them to a conversion server. Free; no registration. PDF Watermark adds a text watermark like CONFIDENTIAL, DRAFT, or SAMPLE to your PDF and exports a new file. Processing happens locally in your browser for privacy.
How to use
Upload a PDF
Choose a PDF file or drag & drop it.
Customize watermark
Set text, size, color, opacity, rotation, and position.
Download
Apply the watermark and download the updated PDF.
A practical example
Mark a review copy as DRAFT before sending it. Check that the watermark leaves the text readable; it does not prevent copying or editing.
Features
Text watermark
Add clear labels like CONFIDENTIAL or DRAFT.
Page targeting
Apply to all pages or only specific pages.
Local processing
No uploads — runs in your browser.
FAQ
Can I add an image/logo watermark?
Not yet. MVP supports text watermark only.
Does this work with encrypted PDFs?
If the PDF is password-protected, watermarking may fail and an error will be shown.