What is PDF Verified?

PDF Verified (pdfverified.com) is an online platform to sign, stamp and verify PDF documents. You can send a document for legally binding electronic signatures, add a digital rubber stamp or company seal, and let anyone confirm the finished file is authentic and unaltered through a public QR code and SHA-256 audit trail. It is pay-as-you-go with no subscription required, and eIDAS + ESIGN + UETA compliant across 190+ countries.

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.

Can PDF Verified check if a PDF has been edited?

Yes. PDF Verified can recompute the SHA-256 fingerprint of a signed PDF and compare it with the fingerprint sealed at completion. If the file was edited after signing, the fingerprint changes and verification fails.

Does PDF Verified include a certificate of completion?

Yes. Completed documents include an audit certificate, also called a certificate of completion, with signer identities, timestamps, IP records, document fingerprint, verification status, and the event history needed for legal review.

Does PDF Verified include an eSignature API?

Yes. Business plans include a REST API and webhooks for sending documents, embedding signing, applying stamps, checking status, and building automated signing workflows.

Can I create a company chop or official seal online?

Yes. PDF Verified includes editable company seal, company chop, official seal, date stamp, and approval stamp templates. Verified stamps can include serial numbers, locked metadata, revocation, and a public QR verification page.

What is the best DocuSign alternative for stamps, seals, and verification?

PDF Verified is built for teams that need more than basic eSignature: public QR verification, PDF authenticity checks, serialized stamps, company seals, audit certificates, and pay-as-you-go signing from $1.50.

How to verify a signature on a PDF

Confirm an electronic signature is genuine and the document has not been altered. Scan the QR code, paste the verification code, or upload the file — PDF Verified recomputes the document SHA-256 fingerprint and checks it against the value sealed at signing. Anyone can verify, with no account.

Three ways to verify

Scan the QR code printed on every page of the signed PDF
Enter the short verification code on the verification page
Upload the signed PDF to recompute and compare its SHA-256 hash

How to verify a signature, step by step

Open the verification page. Go to pdfverified.com/verify, or scan the QR code printed on any page of the signed PDF — the QR opens the verification page automatically.
Submit the document or its code. Upload the signed PDF, paste the short verification code, or let the scanned QR carry the document reference. PDF Verified recomputes the SHA-256 fingerprint.
Read the result. See whether the document is verified or tampered, the completion date, every signer and timestamp, the SHA-256 fingerprint, and the full audit trail.

What makes a signature genuine

A photographed or pasted signature proves nothing. Every PDF Verified signature is backed by three layers of evidence: the signer captured intent (signing action, timestamp, IP), a tamper-evident SHA-256 hash of the sealed document, and a public audit trail — so authenticity and integrity are something anyone can check.

Frequently asked questions

How do I verify a signature on a PDF?

Open pdfverified.com/verify, then scan the QR code printed on the signed PDF, paste the verification code, or upload the file. PDF Verified recomputes the document SHA-256 fingerprint and compares it to the value sealed at signing. If they match, the signature and document are authentic and unaltered; if a single byte changed, verification fails. No account is required.

How can I tell if an electronic signature is real?

A genuine PDF Verified signature is backed by three layers of evidence: the signer captured intent (the signing action, timestamp, and IP), a tamper-evident SHA-256 hash of the sealed document, and a public audit trail. The verification page shows every signer, their timestamps, and whether the document has been modified since signing.

Can anyone verify a signed document, or do I need an account?

Anyone can verify. Every signed PDF Verified document carries a QR code on every page that opens a public verification page — recipients, counterparties, auditors, and courts can confirm authenticity with no account and no login.

What is the difference between verifying a signature and verifying a stamp?

Signature verification confirms who signed a document and that the document is unaltered, using the document SHA-256 fingerprint and audit trail. Stamp verification at /verify-stamp/:token confirms a specific company seal or approval stamp is genuine, shows its serial number and the document it was applied to, and whether it has been revoked.

How do I know a signed PDF has not been tampered with?

PDF Verified seals every completed document with a SHA-256 fingerprint. Because any change produces a completely different hash, the verification page detects tampering instantly: it recomputes the hash of the file you submit and compares it to the sealed value. A mismatch means the file was altered after signing.

Is PDF Verified signature verification accepted in court?

The audit certificate and SHA-256 fingerprint are designed to be admissible evidence. PDF Verified signatures comply with the US ESIGN Act, UETA, EU eIDAS, and equivalent laws in 190+ countries, and the tamper-evident hash plus the timestamped signer hash chain establish authenticity and integrity.

How do I check if a document is original online?

Open the file public verification page — scan the QR code on a PDF Verified document, paste its verification code, or upload the PDF at pdfverified.com/verify. It recomputes the SHA-256 fingerprint and compares it to the sealed original, then shows whether the document is the genuine, unaltered original or a modified copy. It works online in any browser, with no account.

How do I check if a PDF is original or not?

A PDF is the original when its current SHA-256 fingerprint still matches the value sealed at signing. Upload the PDF (or scan its QR code) on the verification page: a match means it is the untouched original; a mismatch means it was edited, re-saved, or forged after signing. PDF Verified also flags post-signature revisions and metadata changes.

How can I tell if a document is fake?

A fake or tampered document fails cryptographic verification: its hash no longer matches the sealed original, or it carries no verifiable seal or audit trail at all. Genuine PDF Verified documents expose a public QR verification page with the signer identities, timestamps, SHA-256 fingerprint and revocation status — evidence a photoshopped or AI-generated document cannot reproduce.

What is a verified PDF?

A verified PDF is a document whose electronic signature and integrity have been cryptographically confirmed: it identifies who signed it, proves it has not been altered since signing (via a SHA-256 fingerprint), and can be checked by anyone through a public QR link or by re-uploading the file. That is exactly what PDF Verified produces and lets recipients confirm — free, with no account.