Add Watermark to PDF
Stamp your PDF with a custom text watermark. Free and private.
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Frequently asked questions
Other Free PDF Tools
Add Watermark to PDF Online — Free
PDFcraft adds custom text watermarks to any PDF for free — no sign up and no file uploads. Stamp CONFIDENTIAL, DRAFT, your company name, or any custom text across every page of your document instantly in your browser.
What does the Watermark PDF tool do?
The free PDF watermark tool embeds a diagonal text stamp on every page of your PDF. You can customize the watermark text, opacity, size, and position. The watermark is embedded directly into the PDF file — it appears consistently on every page in every PDF viewer and when printed. Processing runs locally in your browser — your document never leaves your device.
How to add a watermark to a PDF — step by step
- Click Select File and upload your PDF
- Enter your watermark text — CONFIDENTIAL, DRAFT, your name, or any text
- Adjust opacity (20-30% is recommended for professional results)
- Click Add Watermark
- Download the watermarked PDF
Common watermark use cases
- Mark sensitive business documents as CONFIDENTIAL
- Stamp work-in-progress documents as DRAFT
- Add your company name or copyright to distributed reports
- Mark sample documents before delivering final versions to clients
- Add DO NOT DISTRIBUTE to restricted internal documents
- Brand PDFs with your website URL before sharing online
Is watermarking PDFs online safe?
With PDFcraft, completely safe. Watermark embedding happens locally in your browser — your PDF never gets sent to any server. This is especially important for confidential documents that you are watermarking before sharing with clients or external parties.