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Stamp Text & Logo Watermark on PDF

Add custom text, copyright stamps or transparent image watermarks to all pages of a PDF document without Acrobat.

Select a PDF document to add a watermark.

Your file is never sent to a server. It is read and processed by your own browser, and the results are not stored.

How to use it

  1. Upload your PDF document to the watermark tool.
  2. Enter your watermark text (e.g., CONFIDENTIAL, DRAFT, or your company name).
  3. Customize the angle, opacity, font size, and color to match your needs.
  4. Click "Stamp Watermark on All Pages" and download your branded PDF.

Limits worth knowing

  • Uses standard embedded vector fonts that render cleanly across all PDF viewers and printers.
  • Stamps directly into the document content stream without rasterizing pages.

Protecting confidential PDF documents with watermarks

Watermarks discourage unauthorized sharing of proprietary reports, legal drafts, financial statements, and confidential manuscripts. By stamping a semi-transparent mark across every page, the document’s status is immediately clear.

With Nextechly, watermarking happens 100% inside your browser. Your sensitive agreements and confidential files never leave your computer.

Frequently asked questions

Does Stamp Text & Logo Watermark on PDF upload my files to any server?

No. Stamp Text & Logo Watermark on PDF operates 100% in your local browser sandbox using WebAssembly and Web APIs. Your documents and images never travel over the internet, ensuring full privacy and GDPR/HIPAA compatibility.

Is Stamp Text & Logo Watermark on PDF free to use?

Yes, Stamp Text & Logo Watermark on PDF is completely free. There are no paid tiers, no watermarks, no account registrations, and no usage limitations.

What file formats and sizes are supported?

Stamp Text & Logo Watermark on PDF supports .pdf files up to 50MB directly in your browser.

How does protecting confidential pdf documents with watermarks work?

Watermarks discourage unauthorized sharing of proprietary reports, legal drafts, financial statements, and confidential manuscripts. By stamping a semi-transparent mark across every page, the document’s status is immediately clear. With Nextechly, watermarking happens 100% inside your browser. Your sensitive agreements and confidential files never leave your computer.