🔥 SmokePDF

Watermark PDF

Add a custom text watermark to protect your PDF documents.

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25%
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📖 How to Use This Tool

  • 1
    Choose the PDF file to add watermark to.
  • 2
    Enter the watermark text you want to embed.
  • 3
    Set opacity percentage (e.g. 25% for a subtle stamp).
  • 4
    Click 'Process Now' and download the document.

🛡️ Local Processing & Security Features

  • 100% Privacy: All processing is done locally within your browser. Your files are never uploaded to any server.
  • Lightning Fast: No time wasted waiting for uploads or downloads; processing is instant.
  • Free & Unlimited: Use the tool as much as you need with no account or registration required.

💬 Frequently Asked Questions

❓ Can I adjust watermark transparency?

Yes, you can use the range slider to set opacity between 5% and 70%.

❓ Is the watermark applied to all pages?

Yes, the watermark is rendered dynamically in the center of every single page.