Signature and stamp in PDF online
Add a Stamp to PDF — in 60 Seconds, No Software
A client sent you a report and there's no printer or scanner around? Upload the document to Stampsig, add a signature and stamp to the PDF file, and send the finished document back. You can stamp a PDF right in your browser, from your phone or computer.
Need to add a stamp to a PDF but have no scanner on hand?
- —The document needs to be signed right now, and you're not in the office
- —A client is waiting for the report, and stamping the PDF the "print-sign-scan" way takes far too long
- —You need to stamp 20 pages — doing it by hand would take half an hour
- —You have a photo of the stamp, but the white background gets in the way — it looks unprofessional
stampsig.com lets you stamp a PDF in a minute — no software, from your phone or computer.
Stamping a PDF document — what you can do
- •Add a stamp to a PDF file — for a company, sole proprietor, or any design
- •Add a signature and stamp to a PDF — draw it or upload a photo
- •Automatically remove the white background — the stamp becomes transparent
- •Copy the stamp to every page with one button
- •Save the finished document as a PDF without losing quality
Instructions
How to add a stamp to a PDF — step-by-step guide
Upload the document
Drag a PDF file into the browser window or pick one from your device. PDF, DOCX, DOC, XLSX, XLS, and images all work.
Upload the stamp
Upload a photo of your stamp or choose from the ready-made templates. The white background is removed automatically — the stamp becomes transparent and looks natural in the PDF document.
For the best result, use a clear photo of the stamp on a white background. If the automatic removal isn't perfect, adjust the brightness manually with a single slider.
Transparent background — a stamp that looks real
Uploaded a photo of a stamp from your phone and there's a white rectangle around it? stampsig.com removes the background automatically, and the stamp sits on the document with no visible edges. The result looks just like a real stamp.
If the background isn't removed perfectly, use the built-in brightness slider for fine-tuning — it takes just a couple of seconds.
Place the stamp where you need it
Drag the stamp onto the document. Resize, rotate, and move it until it sits perfectly.
Registered users don't need to upload the stamp every time — it's saved in your account.
Add a signature
Draw your signature with your finger or mouse right in the editor. Or upload a photo of your signature — its background is removed automatically too. That way you add both a signature and a stamp to the PDF at once.
Stamp all pages (if needed)
A multi-page document? One 'All pages' button, and the stamp appears on every page with the same size and position.
After copying, you can reposition the stamp on any individual page.
Download the finished PDF file
One click and your PDF is stamped. Quality is preserved, and the file is ready to send to your client.
Secure: PDF files never leave your device
When you add a stamp to a PDF with Stampsig, all processing happens right in your browser — we never see your files.
- •Documents are not uploaded to a server
- •No one but you has access to the files
- •Once you close the page, the data is cleared from the browser's memory
File formats for stamping PDFs
Documents:
- PDF, DOCX, DOC, XLSX, XLS, JPG, PNG
Stamps and signatures:
- PNG, JPG, JPEG, WEBP
Frequently asked questions
Stamp a PDF — right now
Upload a document, add a stamp to the PDF, add a signature, and download the finished file. The whole process takes less than a minute.