Tools/Watermark PDF
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Watermark PDF

Stamp text diagonally across every page of your document.

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About Watermark PDF

Stamp custom text diagonally across every page of your PDF documents. Add "CONFIDENTIAL", "DRAFT", "SAMPLE", or any custom text as a watermark for document classification, copyright protection, and status indication. The watermark is embedded into the PDF and visible when viewing or printing.

How to use this tool:

  1. Drag and drop a PDF file onto the upload area, or click to browse.
  2. Enter your desired watermark text (e.g., "CONFIDENTIAL", "DRAFT").
  3. Click "Apply Watermark" to stamp the text across all pages.
  4. Download the watermarked PDF or process another document.

Frequently Asked Questions

Can I customize the watermark appearance?

Currently, the watermark is applied as diagonal text across each page. Custom fonts, colors, and positioning may be added in future updates.

Is the watermark permanent?

Yes. The watermark text is embedded into the PDF document and will appear when viewing, printing, or sharing the file.

Does this work with scanned PDFs?

Yes. The watermark is overlaid on top of the PDF content, so it works with both digital and scanned documents.

🔒 Are my files uploaded to a server?

No. MyConverterPro processes all files locally inside your browser using client-side JavaScript. Your data never leaves your device, ensuring 100% privacy and security.

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In-Depth Guide

Add Text Watermarks to PDF Documents

Stamp "CONFIDENTIAL," "DRAFT," or your brand name across every page of your PDF — with customizable text, color, and opacity.

MyConverter Pro Team5 min readWatermark, PDF, Branding

✓Key Takeaways

  • Add diagonal text watermarks to every page of a PDF document
  • Customize text, color, font size, and opacity to match your needs
  • Common uses: CONFIDENTIAL, DRAFT, SAMPLE, company branding, copyright notices
  • Deters unauthorized distribution and identifies document status at a glance

Document watermarking serves two essential purposes in professional workflows: it communicates the status or classification of a document at a glance, and it deters unauthorized copying and distribution. A "DRAFT" watermark on a working document prevents it from being mistaken for a finalized version. A "CONFIDENTIAL" watermark signals that the document should not be forwarded or shared outside authorized recipients. A company name watermark on sample reports or portfolios establishes ownership and branding.

Traditional watermarking requires Adobe Acrobat Pro, Microsoft Word's built-in watermark feature (which only works for Word documents, not existing PDFs), or specialized desktop software. Cloud-based alternatives require uploading your documents to third-party servers — which is particularly ironic when you are watermarking a document specifically because it is confidential.

Our PDF watermark tool runs entirely in your browser, applying your chosen text diagonally across every page of your PDF document. You have full control over the watermark text, font size, color, and opacity. The watermark is applied as a text layer on top of the existing page content, ensuring it is visible without obscuring the underlying document. The tool uses the pdf-lib library to modify the PDF structure directly, adding the watermark text to each page's content stream.

The process is instant. Upload your PDF, type your watermark text (or choose from common presets like "CONFIDENTIAL" or "DRAFT"), adjust the styling to your preference, and download the watermarked PDF. The tool handles documents of any page count — whether you need to watermark a 2-page memo or a 500-page report, every page receives the watermark consistently. And because everything runs locally, your confidential documents stay on your device throughout the process.

Continue reading the complete 5 min guide…

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