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SignFile

Lets users upload PDFs, add signature fields, send for legally binding signatures, and verify authenticity with audit trails and SHA-256 hashes

signfile.ioDocs & WikisSep 2026Ilxonwat

The product is electronic signature software that lets users upload PDFs, add signature and date fields, send documents for legally binding signatures, and verify authenticity via public links, audit trails, and SHA-256 fingerprints. It solves the problem of printing, signing, scanning, and later proving a document is authentic and untampered. It sells to legal, operations, and executive users in businesses of all sizes and to individual consumers handling contracts, NDAs, offers, and leases. It is delivered as SaaS with a free tier, flat monthly pricing, and no account required for signers.

Key features

  • Upload and sign PDFs
  • Drag-and-drop signature and date fields
  • Sanitize hidden JavaScript on upload
  • Secure link signing without account
  • Real-time audit trail with IP and timestamp
  • Activity feed for document events
  • Public verification link without login
  • Tamper-evident SHA-256 fingerprint
  • Download signed PDF and audit certificate
  • Automatic reminder emails
Social posts
  • No social media activity within the last 30 days
GTM channels
  • Changelog
ICP
  • Legal teams
  • Operations teams
  • Executives founders