How to use it
- Drop your PDF into the box — it opens on the last page, where signatures usually go.
- Upload your stamp or signature image (PNG with transparency, or JPG — white is removed).
- Click “Add to this page”, then drag and resize. Use the page selector to stamp other pages.
- Click “Download stamped PDF”.
Why PikStamp
- Multiple stampsCompany seal, personal seal and signature together on the same page.
- Copy to all pagesOne click puts the same stamp on every page.
- Rotated pages supportedLandscape and rotated scans are handled correctly.
- No quality lossYour original PDF is kept intact; only the stamp images are added.
More free tools
Frequently asked questions
Is the stamp added as an image?
Yes. Your stamp is embedded as a transparent PNG image on top of the page, so it looks like a real ink stamp and prints perfectly.
Can I stamp a scanned PDF?
Yes. PikStamp works with scanned PDFs, Word/Excel exports and any other PDF.
Is PikStamp really free?
Yes. All features are free with no sign-up and no watermark. The site is supported by ads.
Are my files uploaded to a server?
No. Your PDFs and stamp images are processed entirely inside your browser with JavaScript. They never leave your device, so it is safe for confidential contracts.
Is a digitally stamped PDF legally valid?
A stamped PDF is widely accepted for everyday business such as quotations, invoices and contract drafts. For legally binding signatures in some countries you may need a certified digital signature. If unsure, ask the other party or a lawyer.
Does it work on my phone?
Yes. PikStamp works in modern browsers on Windows, Mac, Android and iPhone.