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 sign a PDF on a Mac

You can sign a PDF on a Mac without Preview, printing, or any download. Open PDF Verified in Safari or Chrome, drop your PDF in, and add your signature by drawing it on the trackpad, typing it in a signature font, or uploading a photo of your handwritten signature. Add the date and any text you need, then download the signed file, or send it to someone else to sign. Every signed PDF is sealed with a SHA-256 fingerprint and carries a public QR verification link, something Preview’s Markup signature can’t do.

Sign a PDF on Mac →

How to sign a PDF on a Mac — step by step

Open PDF Verified in your browser — In Safari or Chrome on your Mac, go to pdfverified.com and open Quick Sign, no install required.
Drop in your PDF — Drag your PDF onto the page. It stays local in your browser until you choose to save or send.
Add your signature — Draw your signature on the trackpad, type it in a signature font, or upload a photo of it. Add the date, initials or text fields as needed.
Download the signed PDF — Download the sealed file, complete with a public QR verification link on every page. Designing is free; you pay $1.50 to download, or nothing on a paid plan.

What you get

No Preview, no printing, no software, works in Safari or Chrome.
Draw on the trackpad, type, or upload a photo of your signature.
Add the date, initials, text and a company stamp too.
Sealed with SHA-256 and a public QR verification link Preview can’t provide.
Free to start; $1.50 per document or unlimited on a paid plan.

Frequently asked questions

How do I sign a PDF on a Mac for free?

Open pdfverified.com in Safari or Chrome, drop your PDF into Quick Sign, add your signature, and download. It is free to sign; you pay $1.50 only when you download a finished document, or nothing on a paid plan.

Is this better than signing in Preview?

Preview can add a Markup signature image, but it produces no audit trail or verification. PDF Verified seals the document with a tamper-evident fingerprint and a public QR link, so the signed PDF can be verified by anyone.

Do I need to install anything on my Mac?

No. It runs entirely in the browser. There is nothing to download or install, and it works the same on a MacBook, iMac or Mac mini.

Can I sign with my trackpad?

Yes. Draw your signature directly on the trackpad, or type it in a signature font, or upload a photo of your handwritten signature.