Is PDF Verified legally binding?

Yes. PDF Verified signatures comply with the US ESIGN Act, UETA, EU eIDAS regulation, and equivalent eSignature laws in 190+ countries. Every signed document includes a cryptographic SHA-256 fingerprint and a complete audit trail with timestamps and signer hash chain — admissible in court.

How is PDF Verified different from DocuSign?

PDF Verified offers unlimited documents on the $15 Business plan with REST API included. DocuSign charges $40+/user for Business and gates the API behind a $720/month add-on. PDF Verified also includes unique features: public QR verification page on every signed PDF, eStamp designer, AI field auto-detection, and mobile-first signing without requiring an app.

Can I use PDF Verified without a subscription?

Yes. The pay-as-you-go option lets you sign or send one document or envelope for $1.50 without a monthly subscription. Monthly paid plans include a 7-day free trial.

Which file types can I sign with PDF Verified?

Upload PDF, DOCX, TXT, PNG or JPG files. Non-PDF formats are automatically converted to PDF on upload so signers always receive a clean signing-ready document.

How do recipients verify a signed document is authentic?

Every signed PDF includes a QR code on every page. Anyone — even without a PDF Verified account — can scan it to land on a public verification page showing the document status, completion date, SHA-256 fingerprint, and tamper-evidence proof.

Does PDF Verified work on mobile?

Yes — PDF Verified is mobile-first by design. The signing portal uses a native bottom-sheet pattern with touch-optimized canvas signing, sticky CTAs in the thumb zone, and 44px+ touch targets following Apple Human Interface Guidelines. No app download required.

Can I add a company stamp or seal to a document?

Yes. PDF Verified includes a stamp designer for company seals, official seals, approval stamps (APPROVED, PAID, RECEIVED), date stamps, and certified-true-copy marks. Place a stamp on any document like a signature field. On Business plans, the verified stamp library adds auto-incrementing serial numbers, locked metadata, workspace sharing, revocation, and a public QR verification link for every stamp applied.

How do I verify a stamp is genuine?

Each stamp PDF Verified applies mints a unique verification token at /verify-stamp/:token. Scan the stamp's QR code or open the link from the document's audit certificate to see the stamp's name, serial number, the document it was applied to, and whether it has been revoked — so anyone can confirm a company seal or approval stamp is authentic and current.

How do I verify a signature on a PDF is real?

Open the verification page at pdfverified.com/verify and scan the QR code on the signed PDF, paste the verification code, or upload the file. PDF Verified recomputes the document's SHA-256 fingerprint and compares it against the sealed value — if a single byte changed since signing, verification fails. You also see every signer, their timestamps, and the full tamper-evident audit trail. No account is required to verify.

How do I add a digital stamp to a PDF online?

Upload your PDF, open the editor, add a Stamp field, and pick a stamp from your library — a company seal, an APPROVED or PAID approval stamp, a date stamp, or a certified-true-copy mark. The stamp is baked into the sealed PDF with an optional auto-incrementing serial number and a QR code that links to its public verification page. No printer, ink pad, or scanner needed.

Stamp PDF Online

Free online stamp tool and digital rubber stamp generator — add an APPROVED, PAID, RECEIVED, CONFIDENTIAL, company stamp or custom stamp to your PDF, with an optional date.

100% free, no signup. Your file is processed entirely in your browser and never uploaded — then e-sign in one click when you are ready.

Open the Stamp PDF tool →

How to stamp pdf in 3 steps

Upload your PDF — Drop your PDF into the Stamp PDF tool. It is processed entirely in your browser — your file is never uploaded.
Choose a stamp — Pick a preset — APPROVED, PAID, RECEIVED, CONFIDENTIAL, REVIEWED, DRAFT, VOID, FINAL — or type a custom stamp. Set the colour, position, and add today’s date.
Download the stamped PDF — Apply the stamp to the first page or every page and download instantly. No signup, no watermark.

Frequently asked questions

Is the PDF stamp tool free?

Yes. Stamping a PDF is 100% free with no signup and no watermark. The file is processed in your browser, so it is never uploaded to a server.

Can I add a custom or company stamp?

Yes. Choose the Custom option to type any text (ORIGINAL, COPY, URGENT, your company name), or pick a preset like APPROVED, PAID, RECEIVED, or CONFIDENTIAL. You can add today’s date and choose where the stamp sits.

Is this a digital rubber stamp / stamp generator?

Yes — it works as a free online rubber stamp and stamp generator for PDFs. Create a digital rubber stamp, an approval stamp, or a company stamp and apply it to any page without printing, scanning, or installing anything.

Can I add a company seal instead of a stamp?

For a serialized, verifiable company seal or official seal with a public QR verification link, use the PDF Verified stamp & seal feature. This free tool is best for quick text stamps like APPROVED, PAID, or a custom rubber stamp.

Can I stamp every page at once?

Yes. Toggle “apply to all pages” to stamp the whole document, or leave it off to stamp only the first page.

Does stamping a signed PDF invalidate the signature?

Adding a visible stamp changes the file, so for a cryptographically signed or sealed PDF, apply your stamp before signing. For a verifiable, tamper-evident stamp with a serial number and a public QR verification link, use the PDF Verified stamp & seal feature instead.

Is a stamped PDF legally valid?

A stamp is evidentiary — it shows status (approved, paid, received) but does not by itself create a signature. To make a document legally binding, e-sign it; PDF Verified signatures comply with the US ESIGN Act, eIDAS, UETA, and equivalent laws in 190+ countries.