FAQ
Is my PDF uploaded to a server? No. Everything runs in your browser using pdf-lib. Your files never leave your device.
Does this work on mobile? Yes — just upload, customize, and download from any modern browser.
Is there a file size limit? Typical business PDFs work fine. Very large PDFs (50MB+) may be slow in the browser.
Can I stamp multiple pages? Yes — the stamp is applied to every page automatically.
What's the difference between Date Stamp and Approval Stamp? Date Stamp adds a formatted date to your PDF. Approval Stamp adds text like APPROVED, REJECTED, or DRAFT — or any custom text you choose.
How is this different from Smallpdf? Smallpdf requires an account for some features and uploads your files to their servers. This tool is free, private, and entirely client-side.