PDF Tool
Add Watermark
Add text or image watermark to PDF
Drop a PDF here or browse
One PDF · 10 MB max · PDF only
How to Add Watermark
1
Upload
Select or drag and drop your PDF file(s) into the upload area above.
2
Process
Click the process button. Our server handles your file instantly and securely.
3
Download
Download your processed file. Files are available for 1 hour before auto-deletion.
Why Use PaperFlow Add Watermark
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Completely Free
No subscription, no hidden fees. Use the tool as many times as you need.
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No Registration Required
Start using the tool immediately without creating an account.
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Bank-Level Security
All files are encrypted in transit and deleted automatically after processing.
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High Quality Output
Our algorithms maintain original document quality and formatting.
Frequently Asked Questions
How does Add Watermark to PDF work?
Upload a PDF and choose a text or an image/logo watermark. Style it — a tiled diagonal pattern or a single mark — then set the position, size, rotation, and opacity. A live preview shows exactly how it will look before you apply it to every page or just the pages you pick.
Can I use my own logo or an image as the watermark?
Yes. Switch to "Image / Logo" and upload a PNG, JPG, or WebP — a transparent PNG works best. Scale it as a percentage of the page, set its opacity, and place it as a single mark or a repeating tiled pattern, just like a text watermark.
Can I control where the watermark appears?
Yes. Pick "Tiled diagonal" to repeat the mark across the whole page (the classic watermark look), or "Single mark" and place it in any of nine positions — the four corners, the edges, or dead centre.
Can I adjust transparency, colour, size, and angle?
Fully. Use the sliders for opacity (5–100%), font size, and rotation (−90° to 90°), and the colour picker for any colour. The preview updates instantly so you can dial in a subtle grey stamp or a bold coloured banner.
Can I watermark only some pages?
Yes. Choose "Specific pages" and list the pages or ranges, e.g. "1-3, 5, 8". Every other page is left untouched.
Will the watermark be permanent?
The text is drawn directly into each page’s content, so it stays in place and prints in any PDF viewer. It sits on top of the page — it is a visible stamp, not encryption or copy-protection.
What characters can I use?
Standard letters, numbers, and common punctuation up to 100 characters. Unusual symbols or non-Latin scripts are simplified to keep the built-in font rendering reliable.
Is my file secure?
Yes. Files are processed on secure servers over an encrypted connection and automatically deleted within 1 hour. We never store or share your documents.
Is it free?
Yes, with a daily watermark-free allowance. Free and guest exports beyond that allowance carry a small "PaperFlow Free" mark alongside your own watermark; upgrade to Pro for unlimited clean output, higher limits, and larger files.