Can I remove a watermark later?

Once a watermark is permanently stamped into the PDF using our tool, it becomes part of the document and cannot be easily removed. We recommend keeping an original unwatermarked copy.

Is the watermarking process secure?

Yes. PDFino processes your files locally on your own computer. Your document is never uploaded or saved to our servers, ensuring your intellectual property remains private.

Can I remove a watermark later?

Once a watermark is permanently stamped into the PDF using our tool, it becomes part of the document and cannot be easily removed. We recommend keeping an original unwatermarked copy.

Is the watermarking process secure?

Yes. PDFino processes your files locally on your own computer. Your document is never uploaded or saved to our servers, ensuring your intellectual property remains private.

Browser Processing

Add Watermark

Protect your PDF documents

Upload your PDF to add watermark

Drag & drop a PDF, or click to browse

Choose File

PDF files only · Max 50 MB

Processed locally in your browser

Never uploaded to any server

Auto-deleted after session

Instant processing

Pro Tip

Did you know? You can double-click any text in the editor to edit it directly. PDFino automatically matches the original font style!

🟢 Runs completely in your browser.

Add text watermarks to any PDF file. Customize your watermark text and apply it instantly — all processed locally.

How to Use Add Watermark

Upload

Select your PDF files from your device or drag and drop them into the upload area.

Process

Wait a few seconds while our engine processes your file securely.

Download

Once finished, download your result directly to your device with 100% privacy.

Privacy Information

This tool runs 100% locally in your browser. Your files are never uploaded to any server. Your privacy is guaranteed.

Read full policy →

Protect Your PDFs with Custom Watermarks

Adding a watermark is an effective way to establish ownership, prevent unauthorized use, and clearly mark the status of a document (like "DRAFT" or "CONFIDENTIAL"). Our free PDF watermarking tool allows you to quickly stamp custom text across your document. And because we respect your privacy, your PDF is watermarked directly in your browser, meaning it is never uploaded to any cloud server.

Frequently Asked Questions

Upload your document, type the text you want to use as a watermark (like 'CONFIDENTIAL' or your company name), and click 'Add Watermark'. A stamped PDF will be generated instantly.