Add Watermark to PDF — Free Online PDF Watermark Tool
Add custom text watermarks to PDF files. Customize position, font size, opacity, and color. Free, no upload required.
Click to upload or drag & drop
PDF files up to 50MB
100% Private
No Upload
Instant
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What is Add Watermark to PDF — Free Online PDF Watermark Tool?
A PDF watermark tool adds a text overlay to every page of a PDF document. Common uses include marking documents as CONFIDENTIAL, DRAFT, SAMPLE, or adding a company name. Our tool uses pdf-lib running in your browser to embed the watermark text directly into the PDF pages.
How to Use Add Watermark to PDF — Free Online PDF Watermark Tool
- 1Upload your PDF file.
- 2Enter your watermark text.
- 3Choose position, font size, opacity, and color.
- 4Click Add Watermark & Download.
Key Features
- Custom watermark text
- 6 position options including diagonal
- Font size 16—120pt
- Opacity 5—100%
- Color picker
- Runs in your browser with pdf-lib
Benefits
- Mark confidential documents before sharing
- Add DRAFT stamps to work-in-progress PDFs
- Brand PDFs with your company name
Why Use Irreva for Add Watermark to PDF — Free Online PDF Watermark Tool?
Mark confidential documents before sharing
Add DRAFT stamps to work-in-progress PDFs
Brand PDFs with your company name
Runs 100% in your browser — files never leave your device.
No account, no sign-up, no subscription — free forever.
Works on any device: desktop, tablet, or mobile.