How to Add an Official Stamp to a PDF (in Seconds, No Software)

Make your company stamp or seal now. Round seals, dated stamps and approval marks, with a date that fills itself in and a serial number that never repeats. Free to design, and it goes straight onto a PDF, a Word file or an Excel sheet.

Start from one of these and change the wording, or start from nothing:

You have a PDF that needs an official stamp, an approval, a company seal, a received mark, and you need it now, not after a trip to a stationery shop or a three-day wait for a physical rubber stamp to be manufactured. The good news: you can design a custom stamp and add it to your PDF online, in seconds, from any device. Here is exactly how, and how to make that stamp verifiable so it actually holds up.

Why not just use a physical rubber stamp?

A physical rubber stamp takes days to manufacture and ship, costs more than a digital one, and, once you have it, produces a mark anyone can photograph and reuse. For documents that live as PDFs anyway, printing them just to stamp and re-scan adds time, paper, and a loss of quality.

An online stamp solves all of that: design once, apply instantly to any PDF, and, if you use a verifiable stamp, make it something a recipient can actually check rather than just look at.

Step 1, Design your stamp online

Open the stamp maker at pdfverified.com/stamp-maker. Pick a shape (round seal, rectangle, octagon, shield), type your text around the ring and in the centre, and add a date, serial number, logo, or clip-art. There are presets for common needs, APPROVED, PAID, RECEIVED, company seals, and profession stamps (advocate, notary, doctor, engineer). The preview updates live as you design.

Step 2, Apply it to your PDF

Upload the PDF you want to stamp, then place your stamp where it belongs, on the signature block, the corner, or across the page. You can resize and position it precisely. No desktop software is required; it all happens in the browser, on desktop or mobile.

Step 3, Seal and verify (the part that matters)

This is where a digital stamp beats both a rubber stamp and a plain image. When you apply the stamp inside PDF Verified, the PDF is sealed with a tamper-evident SHA-256 fingerprint and a public QR verification link on every page. The stamp itself can carry a serial number and a verification token. Anyone who receives the document can scan the QR code to confirm the stamp is genuine and the PDF unaltered, without an account.

So instead of an official-looking picture that proves nothing, you get an official stamp that is cryptographically tied to that exact document.

Step 4, Download or share

Download the stamped, sealed PDF, or send it for signing if others need to sign too. Designing is free; you pay just $1.50 to download a stamp (pay-as-you-go), or it is free on a paid plan, no subscription required to stamp your first document.

From three days to ten seconds

The whole flow, design a custom stamp, add it to your PDF, seal and verify, takes seconds, works anywhere in the world, and costs a fraction of a physical rubber stamp. Make your stamp online at pdfverified.com/stamp-maker and skip the wait entirely.

Questions people ask about this

Can I add a stamp to a Word document or Excel spreadsheet the same way?

Yes. Both are laid out in the browser as they were written, so a .docx contract or a .xlsx schedule can be stamped without being converted first and without Office installed.

How do I put a PAID or APPROVED stamp on a document?

Choose the mark, place it, and download. A PAID stamp, an APPROVED stamp and a RECEIVED stamp all date stamp a document at the moment they are applied, which is what makes a stamped receipt worth anything later.

Can I add a watermark as well as a stamp?

Yes, and they answer different questions. A DRAFT watermark or a CONFIDENTIAL watermark says what the document is; the stamp says who acted on it. Both can go on in one pass and be sealed together.

Design a stamp or company seal free →

What PDF Verified is, and what it is not

A stamp identifies who issued a document. It is evidence rather than a formality that makes a document binding on its own, and it should only ever be made and applied for a business or an office you are authorised to act for: a mark that imitates another organisation in order to pass a document off as theirs is forgery in most places. Where a registry, a bank or a counterparty requires a particular form of seal, that requirement comes from them.

PDF Verified is a tool for preparing, signing, stamping and checking documents. It is not a law firm, a compliance service or a forensic examiner, and nothing here is legal, financial or compliance advice. Requirements differ by country, by document type and by the party asking, so check what applies to your document before you rely on it, and take advice where the document matters. You are responsible for the documents you create, sign and send, and for having the authority to do so: signing or stamping in somebody else name, or as an organisation you do not represent, is forgery whatever tool is used. To the extent the law allows, we accept no liability for how a document made with this tool is used or relied on. The full position is in our terms of service.

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