PDFDeskpdfdesk.site · Free online PDF tools

YOUR EVERYDAY PDF WORKSPACE

Watermark PDF

Enable JavaScript to use this tool. Instructions and FAQs are available below.

Add a translucent diagonal text watermark to every page of a PDF.

Files stay on this device. Close this tool to clear them. Maximum 50 MB per batch.

A LITTLE HELP, WHEN YOU NEED IT

How to use Watermark PDF

  1. Choose an unencrypted PDF.
  2. Enter the watermark text.
  3. Create and download the watermarked copy.

Need an example? Read the complete Watermark PDF guide →

GOOD QUESTIONS. CLEAR ANSWERS.

Frequently asked questions

Can I watermark all pages at once?

Yes. The same diagonal text watermark is placed on each page.

Which watermark text can I use?

Enter up to 60 characters supported by the built-in Latin font, such as DRAFT or CONFIDENTIAL.

Does a watermark protect a PDF from copying?

No. A visible watermark labels the document but does not encrypt it, control access or prevent copying.

Where are my documents processed?

This tool processes your files locally in your browser. Document contents are not uploaded to a server. The website host still receives ordinary connection information when you open the page.

PRIVATE BY DESIGN

Know where your files are processed.

The original PDF editing tools and Fill PDF form fields process documents in your browser. The seven server tools send submitted content to PDFDesk over HTTPS and return a download directly. Temporary processing files are removed when the request ends. We do not provide public links to your results. No analytics or advertising cookies are used.

The website host receives ordinary connection information when you open the site. Closing a tool clears its file references; downloaded results remain on your device.

Supports unencrypted PDFs, JPG/PNG images and DOCX files. Word conversion limitations are explained in each tool. Editing a digitally signed PDF can invalidate its signature. PDF-to-image output is limited to 100 pages per run.