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The easy-to-use electronic signature

Collect signatures in a simple and seamless way.
Save time, paper and money, all of these with legal validity.

Collect signatures in a simple and seamless way. Save time, paper and money, all of these with legal validity.

🎉 More than 5 million users have signed with ZapSign!

Chat with your users and make the electronic signature process via WhatsApp using ZapSign
— Rafael Dantas, Accountant
— Driely, Sales consultant
— Sidnei Dias, SPD Lawfirm

Perfect for anyone using messaging apps

It's very simple

Clients access your link.

And sign with their finger.

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    Compatible with WhatsApp, email, SMS, Telegram or any other communication channel.

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    92% of documents are signed in less than 1 hour.

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    No need for printers and couriers.

Where your needs and ZapSign meet

You can collect signatures, visas, and fill-in fields from signatories in the body of the document. Collect relevant information or signatures.

Do you talk to your customers via WhatsApp or email? Whatever it is, share the subscription link wherever the conversation is!

Does your company have standardized contracts? Create a form to be filled to be filled in by the salesperson or customer, and your contract will be automatically generated.

Show your customers how modern and digital your company is, customizing the signature experience with your colors and branding.

Want even more security for your documents? Ask the signer to take a selfie, ID photo, or record a video while signing!

Integrate ZapSign with your Google Drive, CRM and systems with our integrations. We also have an API for any use case.

You are in good company

+100,000 companies already trust us. Meet some of our customers.

  1. Truora
  2. Greenpeace
  3. Rappi
  4. Platzi
  5. Chiper
  6. Muni
  7. OnTop
  8. Hunty
  9. Manserv
  10. Hemomed
  11. Espaco Laser
  12. NovAmérica
  13. Grupo Figueiredo
  14. Martha Medeiros
  15. Me Salva!
  16. Conta Simples
  17. Siaeweb
  18. Mercy for Animals
  19. Fomenta Vale
  20. Braile Cardio
  21. Fiduc
  22. Assessoria VIP
  23. Unicred
  24. Microlins

Legally binding electronic signature

The electronic signature has legal validity in practically every country and regions in the world, for instance US, EU and Latin America.

ZapSign captures various signer authentication data in addition to the on-screen signature, such as the signer's IP, date and time, phone, email, unique code and device, browser, and operating system information. In addition, the integrity of the document is ensured by the SHA256 algorithm, a cryptographic hash function created by the NSA, which identifies if any type of change is made to the original document, in addition to the final document being digitally certified by ZapSign with an A1 ICP certificate.

The electronic signature of online documents can be used in practically all private documents such as contracts, powers of attorney (common and judicial), proposals, agreements, loans and registrations, among others.

How it works

  1. Upload the document

    1. Upload the document

    You upload the PDF document for electronic signature.

  2. Share the link

    2. Share the link

    By WhatsApp, SMS, email or any other channel that your customer prefers.

  3. Wait for the signature

    3. Wait for the signature

    You will be notified by email when the person signs the document.

Create an account for free


We have an ideal plan for each type of business. Starting at $6/month.

See prices Start free

API integration

If you need automation, check out our electronic signature API,
a fast and flexible way to integrate ZapSign into your systems.

Read API documentation