Drag a PDF invoice. Pick PAID, UNPAID, VOID or custom text. Customise the look. Download the stamped PDF. Works entirely in your browser — your file never leaves your device.
No sign-up, no uploads, no waiting. The whole thing runs in your browser.
Drag and drop any PDF invoice or click to browse. Multi-page PDFs fully supported.
Pick PAID, UNPAID, VOID or custom text. Set the color, opacity, angle and size. Drag to reposition.
Click "Stamp & Download". The stamp is rendered directly into the PDF — not just a CSS overlay.
Pre-built stamps for the most common states, plus full custom text for anything else.
Adjust color, opacity, angle, and font size. Drag the stamp to any position on the page.
Optionally add today's date and a reference number (invoice ID, PO number) below the stamp text.
Stamp every page of a multi-page invoice, or just the first. You choose per download.
Your PDF is processed entirely in the browser using PDF-lib. Zero uploads, zero servers, zero risk.
The stamp is written directly into the PDF file — sharp at any zoom, perfect for printing.
Also available as a native Mac and Windows desktop app via Tauri. ~5 MB, works fully offline.
No account. No cloud. No subscription. Your invoices are yours.
Your PDF never leaves your device. Processing happens 100% in the browser using local JavaScript.
No sign-up, no email, no password. Buy once, use the app directly. Nothing to log in to.
One-time payment. No subscription, no renewal, no price hikes. Pay once and it's yours.
Web app and desktop app (Mac + Windows). No tiers, no upsells.
Try it free first. No credit card required to try the app.
Drop your first invoice and see the stamp in under 10 seconds. No sign-up required.
Launch Stamp My PDFs — it's free to try