IgniSign

E-signature API for embedding simple and advanced electronic signatures in your product

IgniSign is an e-signature API for developers and integrators. Your application creates a signature request with one call, the signer signs inside your product or from a hosted link, and you retrieve the proof: a signed PDF with a signature page, signature files (PKCS#7, XMLDSig or JWS) and a timestamped audit log. It supports simple and advanced electronic signatures as defined by eIDAS, set per signature profile, and does not offer qualified electronic signatures.

The API exposes REST endpoints and webhooks, with Node.js and JavaScript SDKs, an embedded web SDK, and Android and iOS integration examples. Signers can authenticate by email link, SMS code, TOTP, passkey or your own SSO; advanced signatures add a second factor or identity verification through an automated ID document and selfie check, open banking or SSN. A corporate e-seal, RFC 3161 timestamps and storage beyond default retention are also available.

IgniSign is aimed at teams embedding signing into an existing product rather than using a standalone console. Development is free, staging signatures and seals are free, and production is billed per signature with no seat, minimum or subscription; usage is invoiced monthly in arrears. A limited number of simple signatures per organization per month are free in production, and SMS and identity verification are billed separately.

12 alternatives to IgniSign

Ranked by how well each tool replaces IgniSign: shared features, audience, price and popularity.

DottedSign
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DigiSigner
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airSlate SignNow
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eSignatures.com
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Covers 5 of 15 key features.
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SignWell
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LibreSign
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Scrive
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Covers 5 of 15 key features.
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