Collect digital signatures anywhere

Simplify your document workflows with Formstack Sign, a digital document signing app that lets you eSign documents on any device.
No credit card required
13 hours per week saved
Easy to use
14-day free trial

Easy digital document signing app

Avoid the bottlenecks associated with waiting for signatures. With Formstack Sign's digital signature solution, anyone can eSign documents using a computer, tablet, or mobile phone.

13 hours/week

Formstack Sign saves teams an average of 13 hours per week, giving them more time to focus on impactful work.


90% of customers say Formstack helps them get their job done.

G2 Leader

G2 named Formstack a 2022 leader in Online Forms, Document Generation, and eSignature collection.
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Digital signature solution for

any industry

Accept patient signatures

Let patients and staff eSign documents from anywhere with their smartphone, tablet, or computer.

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Create a paperless campus

Let students and staff sign documents from the convenience of their phone, tablet, or computer.

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Simplify insurance workflows

Collect eSignatures on any device, and send documents to systems like Applied Epic and Vertafore.

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Streamline finance processes

Enable clients and other stakeholders to review and sign financial documents on any device.

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Shift to digital government

Automate eSignature capture for citizens and staff. No mailing, scanning, or faxing needed.

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Automate signature collection

Use digital signature automation to simplify workflows for employees while out in the field.

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Modernize your legal processes

Safely collect eSignatures on contracts, agreements, NDAs, and other legal documents.

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Simplify signature capture

Allow applicants and donors to eSign important documents from anywhere via text or email.

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Automate real estate workflows

Collect client signatures on rental applications, contracts, loan files, and other documents.

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Collect signatures anywhere

Simplify your workflows with eSignatures that can be captured quickly via email or text.

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Secure signatures

Safely eSign documents that contain healthcare data with our protected document signing app.

FDA compliance

Meet Food and Drug Administration requirements for signatures outlined in 21 CFR Part 11.

Audit trails

Get a comprehensive audit trail with each signed document that logs all document activity.

Collect signatures on a variety of documents

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Easily connect to your favorite apps

Formstack Sign integrates with dozens of apps, helping you save time and better meet the needs of customers and employees with seamless digital signature automation workflows.

Start simplifying your digital signature workflows by signing up for a free trial.
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32,000+ organizations have automated 500+ interactions

Solutions to fit any need

Increase your lead generation.

Convert more leads into customers with Formstack's smart lead forms and powerful conversion rate optimization tools.
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An all-in-one solution for workplace productivity

Frequently Asked Questions

With Formstack Forms, anyone in your organization can build custom online forms, collect data, and automate processes. No coding required online form builder.
What is a digital signature?
What is a digital signature

A digital signature is an electronic, encrypted, and authenticated “fingerprint” backed by a digital certificate that confirms your identity. This modern upgrade from the pen-and-paper method enables users to sign documents in digital format faster and more conveniently.

How can I create a digital signature?
How can I create a digital signature

You can create a digital signature by using our eSignature solution. With Formstack Sign, people can sign documents via computer, tablet, or mobile phone. To create a digital signature, simply upload or access the intended document, provide your signature where appropriate, and click send.

Are digital signatures legally binding?
Are digital signatures legally binding

Yes, digital signatures are legally binding across the United States and many countries worldwide. To meet legal standards, an electronic signature should include the following: 

  • A digital certificate and audit trail that can be traced back to the initial signer
  • Authentication techniques that can properly verify the identity of the signer

How do digital signatures work?
How do digital signatures work

When you submit an eSignature, a mathematical algorithm generates a distinct digital fingerprint—also known as a hash—that is unique to the specific document. The hash then gets encrypted via your private key, which is used to encrypt and decrypt protected information. Your digital signature will also be assigned a public key, which is publicly visible. The encrypted hash and your public key merge to become your digital signature.

Digital signatures are verified when a document is opened in a designated program that uses your public key to decrypt the encoded hash. If the decrypted information matches the signature at the time of signing, then it is validated.

Can digital signatures be copied from one document to another?
Can digital signatures be copied from one document to another

No, every digital signature is unique to the particular document it is used with. This means you cannot copy and paste a signature from one document to another. Just as each handwritten signature is unique, so are digital signatures.

What is the difference between digital and electronic signatures?
What is the difference between digital and electronic signatures

Although they are similar, a digital signature is a more secure version of an electronic signature. Digital signatures are tamper-evident, meaning you can easily identify any changes to the original document or signature. An electronic signature is simply a digitized version of your signature, often validated with personal identifying information, such as email, address, phone number, etc.

Can a notary notarize a digital signature?
Can a notary notarize a digital signature

Yes, a notary can notarize a digital signature in the signer's presence after a document is printed. Additionally, 29 states have passed legislation allowing for electronic notarization, which enables notaries to certify documents remotely.

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