PDF Stamp Tool — Add Text to PDF Free

Add professional-looking text stamps to any PDF with PDFInSnap. Whether you need to mark a document as a draft, approved, or confidential, our free PDF stamp tool handles it in seconds. All processing happens locally — no uploads required.

Drop a PDF here or click to browse

PDF files only

Watermark text

Opacity: 30%

Font size: 48pt

Diagonal (45°)

🔒 Files stay in your browser♾️ No file size limits🆓 Always free

Frequently Asked Questions

How do I add a stamp to a PDF?

Upload your PDF, enter your stamp text, adjust the style settings, and click Add Watermark. Download your stamped PDF instantly.

What text can I use?

Any text: DRAFT, CONFIDENTIAL, APPROVED, VOID, your company name, or any custom message.

Also try the full Watermark PDF tool, or explore all PDF tools.