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SignForge icon

SignForge

E-signature platform whose signed PDFs carry embedded cryptographic proof, verifiable by anyone without an account or the vendor.

Signforge Home Page

Cost / License

  • Freemium (Subscription)
  • Proprietary

Application type

Platforms

  • Online
  • Software as a Service (SaaS)
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Signature Audit Trail
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12+ Pdf tools
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Features

Properties

  1.  Privacy focused
  2.  Lightweight
  3.  AI-Powered

Features

  1.  Built-in viewer
  2.  No Coding Required
  3.  Fill PDF Forms
  4.  PDF compression
  5.  Ad-free
  6.  Sign PDF files
  7.  Split PDF files
  8.  Combine PDF
  9.  PDF annotation
  10.  E-signature

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Create and edit PDFs. Collaborate with ease. E-sign documents and collect signatures. Get everything done in one app, wherever you work. Acrobat’s got it. Stay on top of your documents with powerful features for desktop, mobile, ...

 
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SignForge information

  • Developed by

    IN flagSignforge

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    Subscription ranging between $13 and $67 per month + free version with limited functionality.

  • Alternatives

    51 alternatives listed

  • Badge

    Get an embeddable badge for SignForge

  • Supported Languages

    • English

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What is SignForge?

SignForge is an e-signature platform built around portable proof for Enterprises. Every PDF it signs embeds a W3C Verifiable Credential, an ECDSA P-256 signature, and a SHA-256 hash, anchored in a public Merkle transparency log — so anyone can verify a document offline, without a SignForge account and without depending on SignForge continuing to exist. Most e-signature tools verify through their own portal; here the document is its own evidence.

Upload a PDF or draft one from a prompt with the Amanda AI assistant, place signature, date, name, and text fields, then send a secure link. Signers need no account and can sign from any device by typing, drawing, or uploading a signature image.

Key features:

  • Signed PDFs carry embedded, independently verifiable cryptographic proof
  • Public transparency log for offline verification by anyone
  • Amanda AI drafts agreements from a plain-language prompt
  • No account needed to sign — recipients just open the link
  • Append-only audit trail with timestamps, IP addresses, and explicit consent, plus a signing certificate
  • Reusable templates, bulk send, and bulk signing for high volumes
  • Team workspaces, custom domains, and delivery by email, SMS, or WhatsApp
  • Enterprise: SSO/SAML, REST API with webhooks, embeddable signing widget, MCP server for AI agents
  • 12 free browser-based PDF tools — merge, split, compress, rotate, watermark, unlock, page numbers, image/PDF conversion
  • Legally binding under the ESIGN Act, eIDAS (simple and advanced), and UETA
  • Permanently free tier: 10 e-signs per month, no credit card, no trial expiry

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