Add Watermark
Add text or image watermarks to PDF pages
Add Watermark stamps your text diagonally across the center of every page in a PDF, in bold gray type at 45 degrees — the classic watermark look — with an opacity you can adjust so it's subtle or prominent.
Choose a PDF file above — processing starts automatically.
How to use Add Watermark
- 1
Upload your PDF.
- 2
Enter the watermark text.
- 3
Adjust the opacity if needed.
- 4
Download the watermarked PDF.
Everything you need to know about PDF watermarks
What is a watermark for?
A watermark stamps text or an image across every page of a document — commonly used to mark a document as a draft, assert copyright or confidentiality, or brand a document with a logo before it's distributed.
When you actually need this
- Marking a document "DRAFT" or "CONFIDENTIAL" before it's shared for review.
- Branding a document with a company logo before sending it externally.
- Deterring unauthorized redistribution of a document by making its source visibly traceable.
Keep it readable
A watermark set too dark or too large can make the underlying content hard to read — a lower opacity, diagonal placement is the common convention specifically because it stays visible without interfering with the actual text.
Related PDF Tools
Merge PDF
Combine multiple PDF files into one document
Split PDF
Split a PDF into individual pages or page ranges
Compress PDF
Reduce PDF file size while maintaining quality
PDF to Word
Convert PDF documents to editable Word files
Word to PDF
Convert Word documents to PDF format
PDF to JPG
Convert PDF pages to high-quality JPG images
Frequently Asked Questions
Does the watermark appear on every page?
Yes — it's stamped once per page, applied to the entire document, not just the first or last page.
Can I control how visible the watermark is?
Yes — opacity ranges from 0.05 (very subtle) to 1 (fully opaque), with 0.25 as the default.
What if my watermark text uses characters outside basic English, like CJK or Arabic?
Unsupported characters are automatically replaced rather than breaking the whole document, since the underlying font only supports a Western character set — stick to standard Latin characters for guaranteed results.
Does this tool send my PDF to a server?
Yes — your file is uploaded securely, watermarked, and deleted from our servers within 1 hour.
Is this tool free to use?
Yes — completely free, with no signup and no extra watermark added beyond the one you requested.