Stamp PDF Online — Add Text Overlay
PDFInSnap's PDF stamp tool adds a custom text overlay to every page of your PDF. Use it to mark documents as CONFIDENTIAL, APPROVED, VOID, or with any custom text. Processed entirely in your browser — files stay on your device.
Diagonal (45°)
🔒 Files stay in your browser♾️ No file size limits🆓 Always free
Frequently Asked Questions
Is a "stamp" the same as a watermark?
In practice, both refer to text overlaid on a PDF page. PDFInSnap adds text as a diagonal semi-transparent overlay on each page.
Can I stamp a PDF without creating an account?
Yes. No account is required — just upload and stamp.
Also try the full Watermark PDF tool, or explore all PDF tools.