Watermark PDF

Stamp a text watermark on every PDF page — private, in your browser.

How it works

  1. Select a PDF — it never leaves your device.
  2. Type your watermark text and set opacity and angle.
  3. Click Add — the watermark is stamped on every page in your browser.
  4. Your watermarked PDF downloads automatically.

Frequently asked questions

Is my PDF uploaded to add a watermark?
No. The watermark is applied locally in your browser; your document never leaves your device.
Can I control how it looks?
Yes — set the text, opacity, and choose a diagonal (45°) or horizontal watermark.
Will it appear on every page?
Yes, the watermark is stamped on all pages of the PDF.