Add PDF Watermark Online – Overlay Text Watermarks Free

Overlay custom text watermarks across PDF pages with opacity and position control directly inside your browser.

✓ Browser Processing✓ Files Never Leave Your Device✓ No Watermarks Added
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Drop PDF document to add pdf watermark

Supports PDF files up to 100MB (Max 500 pages). Or paste from clipboard

Select File from Device
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High-Performance Cloud Infrastructure & CDN

Deploy web applications edge-wide with instant global response times.

AdSense Network

Document Protection and Diagonal Watermark Compositing

Watermarking legal drafts, proprietary proposals, and confidential files deters unauthorized distribution and marks document lifecycle status.

Wivon Tools Add PDF Watermark draws diagonal vector text overlays across PDF pages directly in browser RAM.

Experience fast, private, server-free PDF watermarking.

Frequently Asked Questions

Everything you need to know about browser PDF editing

How do I add a watermark to a PDF?

Upload your PDF file, enter your custom watermark text (e.g. 'CONFIDENTIAL' or 'DRAFT'), adjust opacity, and click Apply.

Are my PDF files uploaded to a server?
Can I adjust watermark opacity?
Is this watermark tool free?
Does it add a Wivon Tools watermark?
Does it work on mobile phones?
Can I choose watermark position?
Why watermark PDFs?

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