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 share (and sign) a PDF on WhatsApp

You can share a PDF on WhatsApp and have it signed without a printer, a scanner, or the WhatsApp Business API. Instead of attaching the raw file, PDF Verified gives you a secure signing link you send straight into a WhatsApp chat. The signer taps it, opens the document in their phone browser, signs on the screen, and you get back a sealed, tamper-evident copy with an audit trail and QR verification. Because it is a link, not an attachment, you can track who opened and signed it — and add OTP over WhatsApp or email if you need to verify the signer first.

Sign & share on WhatsApp →

How to share (and sign) a PDF on WhatsApp — step by step

Upload the PDF and add fields — Drop in the document, then place signature, initial and date fields where each person should sign. No account is needed for the signer.
Get the signing link and open WhatsApp — Enter the signer’s name, then choose Share on WhatsApp. PDF Verified opens WhatsApp with a ready-to-send message containing the secure signing link — pick the chat and send. No WhatsApp Business API required.
Signer signs; you get the sealed copy — The signer opens the link in their phone browser, signs, and submits. You can turn on an OTP sent over WhatsApp or email to verify them first. When it’s done the PDF is sealed with a tamper-evident fingerprint and QR verification.

What you get

Send a signing link straight into a WhatsApp chat — no attachment to lose.
Signers sign on their phone in the browser — no app, no account, no printing.
Works from any device without the WhatsApp Business API.
Optional OTP over WhatsApp or email to authenticate the signer.
Sealed, tamper-evident signed copy with an audit trail and QR verification.

Frequently asked questions

How do I sign a document on WhatsApp?

You don’t sign inside WhatsApp itself — you send a secure signing link through WhatsApp. Upload the PDF to PDF Verified, choose Share on WhatsApp, and send the link to the chat. The signer taps it, signs in their phone browser, and you get a sealed copy back.

Do I need the WhatsApp Business API?

No. Sharing the signing link uses a normal WhatsApp chat — PDF Verified just opens WhatsApp with the message pre-filled so you can pick a contact and send. The WhatsApp Business API is only used for optional OTP verification codes.

Can the signer sign on an iPhone or Android?

Yes. The link opens in the phone’s browser on both iPhone and Android, and the signer signs with their finger — no app to install and no account to create.

Is a signature sent over WhatsApp legally valid?

Yes. The signature is captured on the PDF Verified signing page with consent and intent, sealed with a tamper-evident hash, and backed by an audit trail — the same court-admissible record you get from an emailed request. WhatsApp is only the delivery channel for the link.

Can I check who opened and signed?

Yes. Because you send a tracked link rather than a file attachment, you can see when it was opened and signed, send reminders, and receive the sealed signed PDF with QR verification.