Watermark PDF
Free online tool to watermark pdf securely and instantly.
Watermark PDF
Stamp a custom text watermark across every page of your PDF.
Drop your PDF here
or click to browse from your computer
Watermark Options
Your Privacy & Data is 100% Safe
Your Privacy & Data is 100% Safe
All uploaded documents and input details are processed entirely within your browser. We do not store, copy, or transmit any of your data to our servers. Your information remains strictly confidential and secure.
Free Online PDF Watermark — Add Text Stamps to Documents
Watermarking your PDF documents is essential for protecting intellectual property, marking documents as drafts, or applying a confidential stamp. Our free PDF Watermark tool allows you to overlay a large, diagonal text stamp across every page of your PDF instantly.
How to Add a Watermark to a PDF
- Upload PDF: Select the document you wish to watermark.
- Enter Text: Type the watermark text. Common examples include CONFIDENTIAL, DRAFT, DO NOT COPY, or your company name.
- Adjust Opacity: Change the transparency of the watermark so it doesn't obscure the underlying text of your document.
- Download: Click Apply to generate the new, watermarked PDF.
Is the Watermark Permanent?
Yes. The text is drawn directly into the PDF content stream using `pdf-lib`. While advanced PDF editors might be able to remove it layer by layer, it acts as a strong deterrent against casual copying or screenshotting.