Add Watermark Online
Add a text watermark to PDF pages with adjustable opacity and font size. Mark drafts or copies locally, then review and download the new PDF.
Your input is processed in your browser. How local processing works
How to use Add Watermark
Choose input
Choose your document from your device.
Review settings
Enter watermark text, font size and opacity.
Save results
Review the result and download a new copy.
Tips for Add Watermark
Watermarks are visible overlays and do not prevent copying.
Apply DRAFT across a report at 25% opacity.
What to expect from Add Watermark
Process documents on your device
Download PDFs or page images
Review results before sharing
When to use Add Watermark
Add a text watermark to PDF pages with adjustable opacity and font size. Mark drafts or copies locally, then review and download the new PDF.
Add Watermark: frequently asked questions
What to know before you go.
Can I process large files?
Files follow the browser memory limit: 50MiB on smaller devices and 200MiB on desktop. Page rendering and extraction support up to 200 pages at a time.
How do I use Add Watermark?
Enter watermark text, font size and opacity.
What should I check in the result?
Watermarks are visible overlays and do not prevent copying.
Are my files uploaded?
No. Files and passwords are processed in this browser. Processing assets download from this site.
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