Powerful Features, Simple Experience

Everything you need to sign, send, and manage documents — built for speed, privacy, and compliance.

Quick Sign

Upload any PDF, draw or type your signature, place it exactly where you need it, and download the signed document — all in under a minute.

Request Signatures

Need someone else to sign? Send a signing request via email. Track who has signed and who hasn't in real time from your dashboard.

2FA Identity Verification

Enable OTP-based two-factor authentication for signing requests. Each signer must verify their email with a one-time code before they can access the document — ensuring only the intended recipient signs.

Certificate of Completion

When all signers have completed a document, iSigner automatically generates a tamper-proof PDF certificate that includes the exact date and time of each signature, signer details, device information, application used, and SHA-256 signature hashes.

Audit Trail

Full compliance-grade audit trail for every signing request. Every action is recorded — when the link was opened, when each signer viewed or signed the document, declines, IP addresses, user agents, and cryptographic signature hashes.

Profile & Form Auto-Fill

Build your profile once — save your full name, email, phone number, company, job title, mailing address, and more. When you encounter forms, iSigner auto-fills your saved details so you never type the same information twice.

Reusable Templates

Create templates with pre-placed signature spots. Perfect for contracts, NDAs, and forms you send repeatedly — just pick a template and go.

Bulk Signing

Send the same document to dozens of signers at once. Ideal for onboarding, policy acknowledgements, and company-wide agreements.

Team Management

Invite team members, manage roles, and collaborate on documents. Keep your entire organization signing from one place.

AI Form Fill & Sign

Use AI to automatically detect form fields on any PDF. Fill out the form digitally, then sign — or send to someone else to fill and sign.

100% Local Processing

Your documents never leave your device. All PDF processing and signature placement happens right in your browser — nothing is uploaded.

Dark & Light Themes

Switch between dark and light mode to match your preference. Comfortable signing any time of day.

Deep dive into key features

Security, compliance, and productivity features that set iSigner apart.

Security

2FA Identity Verification

When you enable OTP verification on a signing request, each signer receives a one-time passcode to their email before they can access the document. This ensures that only the intended person can view and sign — preventing unauthorized access even if the signing link is shared.

  • One-time passcode sent to signer's verified email
  • Rate-limited: max 6 attempts per OTP code
  • Resend cooldown: 1 code per 60 seconds
  • Session token issued after verification
  • Toggle per-request — enable for sensitive documents
Compliance

Certificate of Completion

Once every signer has completed a document, iSigner automatically generates a PDF certificate that serves as a legally defensible record of the signing ceremony.

  • Document name and unique request ID
  • Each signer's name, email, and signing timestamp
  • Device and browser (user agent) information
  • IP address at the time of signing
  • SHA-256 cryptographic hash of each signature
  • Downloadable as a standalone PDF
Transparency

Audit Trail

Every action on every signing request is logged in a timestamped, immutable audit trail. View the full history from your request detail page — perfect for compliance, disputes, and internal records.

  • Request created — who initiated and when
  • Link opened — each time a signer views the document
  • Signed — exact timestamp, IP, user agent, and signature hash
  • Declined — with optional reason from the signer
  • All complete — final completion event logged
  • Exportable timeline with SHA-256 integrity hashes
Productivity

Profile & Auto-Fill

Save your personal and business information in your iSigner profile. When you fill forms or sign documents, your saved details are automatically populated — saving you time on every document.

  • Full name and email address
  • Phone number
  • Company name and job title
  • Mailing address
  • Date fields auto-filled with current date
  • Works with AI-detected form fields
  • One-click update from your profile page

Start signing for free

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