What is an electronic signature?

An electronic signature is any digital method of indicating agreement or intent to sign — a scanned handwritten signature image, a typed name, clicking 'I agree', or an image overlay on a document. It's the broad category that most online signing tools use.

What is a digital signature?

A digital signature is a specific type of electronic signature that uses public-key cryptography. It creates a mathematical fingerprint of the document tied to the signer's private key. Any change to the document after signing invalidates the signature — providing tamper-evidence and non-repudiation.

Which one do I actually need?

For most everyday documents — contracts, NDAs, offer letters, rental agreements, invoices, consent forms — a simple electronic signature (image overlay) is legally sufficient in most jurisdictions. Digital signatures are required for government filings, financial instruments, and documents requiring audit trails with cryptographic proof.

Is a scanned handwritten signature an electronic signature?

Yes. A scanned or photographed handwritten signature that's overlaid on a document qualifies as an electronic signature in most legal definitions, including the EU's eIDAS regulation and the US ESIGN Act.

How does FileCrisp's signature tool work?

FileCrisp places your signature image on a PDF or image file entirely in your browser. This is an image-based electronic signature — valid for most everyday documents. Nothing is uploaded. No account is needed.

Document ToolsMay 20267 min read

Electronic vs Digital
Signature — What's the Difference?

These two terms are often used interchangeably — but they mean very different things legally and technically. Here's a clear breakdown of what each is, when to use each, and which one you actually need.

Electronic Signature

Any digital representation of intent to sign — a scanned handwritten signature, a typed name, or an image overlay. Simple, fast, widely accepted.

Digital Signature

A cryptographic signature using public/private key encryption. Provides tamper-proof verification and non-repudiation. Required for high-stakes legal and financial documents.

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Note

Simple rule: If you're signing a standard business document (contract, NDA, letter), an electronic signature is sufficient. If you're filing government documents or need legally non-repudiable proof of signing, use a digital signature via a certified provider.

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Electronic vs DigitalSignature — What's the Difference?