Digital Signature API
Generate documents, collect signatures, and manage signing workflows with a simple API.
No credit card requiredMain Features
Legally binding E-Signatures
Email OTP verification for signers
Tamper-proof signed documents
Detailed audit log with key signing events
Secure signing flow with recipient tracking
Simple and Reliable REST API
Generate, send, and sign documents using a single API
Consistent JSON responses across all endpoints
Built on top of PDFGate’s full PDF toolkit
Combine signing with other PDF operations (generate, flatten, watermark, secure)
SDKs available for different programming languages
Real-Time Updates
Receive webhook events for every step of the signing process
Track events such as envelope sent and completed
Automatic webhook retries for reliable delivery
Build reactive workflows based on signing status
Developer-Friendly Signing Flow
Create envelopes with multiple recipients
Define signer roles
Built-in signing UI
Pre-signed access links for secure document access
Signing Workflow
Generate a document with signature fields
Create an envelope using the document
Send the envelope to recipients
Recipients sign the document through the signing UI
Start collecting digital signatures today
Automate your document signing process with a simple API
