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Add Watermark to PDF Online — Text Stamps on Every Page
Stamp custom text like CONFIDENTIAL or DRAFT across every page — control the color, angle, size and opacity.
Files never leave your device No installation
Mark documents clearly before sharing them: stamp “CONFIDENTIAL”, “DRAFT”, “COPY”, a company name or any custom text across every page of your PDF. Adjust the font size, color, rotation angle and opacity until it looks exactly right.
Watermarking is applied locally in your browser — ideal for legal drafts, unreleased reports and proposals that shouldn’t travel through third-party servers.
Any custom text
CONFIDENTIAL, DRAFT, your brand — stamp whatever text you need.
Full styling control
Set the color, size, diagonal angle and transparency of the watermark.
Every page at once
The watermark is applied consistently across the entire document.
Permanent marking
The stamp is embedded into the page content, not a removable layer.
How to use the Watermark PDF tool
- 1
Open the PDF you want to watermark.
- 2
Type your watermark text.
- 3
Tune the size, color, angle and opacity with live preview.
- 4
Download the watermarked PDF.
Frequently asked questions
How do I add a CONFIDENTIAL stamp to a PDF?
Open the Watermark tool, type CONFIDENTIAL, pick a color and diagonal angle, set opacity so the text underneath stays readable, and download.
Can the watermark be removed later?
The watermark is drawn into the page content itself, so it can’t be switched off in a PDF reader like an annotation could.
Can I watermark many pages at once?
Yes — the watermark is stamped on every page of the document automatically.
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