Electronic Signatures,
Built Into Your Forms
Collect legally binding electronic signatures directly within your forms. Every signed document gets a unique document number, integrity hash, and downloadable PDF.
How Formlio Sign Works
Build Your Form
Add a Signature field to any form in the builder.
Collect Signatures
Users review the document and sign electronically.
Document Number
Each signed document gets a unique FL-SIGN number.
Download PDF
Signers receive a signed PDF with document metadata.
Security & Verification
Document Verification
Every signed document can be verified at formlio.app/verify using its unique document number.
Integrity Hash
SHA-256 document hashing ensures that any tampering is immediately detectable through the verification system.
Legal Compliance
Electronic signatures comply with the E-SIGN Act, UETA, and similar laws. See our Consumer Consent Disclosure.
Verify a Document
Have a document number? Check its authenticity and integrity status.
Go to VerificationPowered by Formlio Sign