What is the difference between a digital and electronic signature?
In one line: an electronic signature is what the law recognizes, and a digital signature is how the document is cryptographically sealed. Electronic signature is the umbrella term for any electronic mark of intent. A digital signature is a specific technology that uses cryptography to prove the file has not changed.
Every digital signature is an electronic signature, but not every electronic signature is digital. The rest of this page unpacks each term, lays them side by side, and shows why the best signing tools quietly use both at once.
What is an electronic signature?
An electronic signature is the broad legal concept: any electronic mark indicating agreement. Typing your name, clicking a button, or drawing on a touchscreen all qualify. Under the US ESIGN Act and UETA, it is binding when intent, consent, association with the record, and retention are present. The term says nothing about the underlying technology - that is deliberate, so the law stays neutral as tools evolve.
What is a digital signature?
A digital signature is a specific technology, not a legal category. It uses public-key cryptography and a document hash to produce a mathematical guarantee of integrity and authenticity: change a single byte of the file after signing and verification fails. International standards like PAdES, CAdES, and XAdES define how these signatures are embedded in PDFs, files, and XML. Document eSign applies a PAdES-B digital signature to every completed PDF.
Digital vs electronic signature, side by side
- Electronic = legal concept. Defined by law, technology-neutral, covers any mark of intent.
- Digital = cryptographic technology. Uses keys, hashes, and certificates to detect tampering mathematically.
- Scope. Every digital signature is an electronic signature; the reverse is not true.
- Proof. An electronic signature relies on the audit trail for evidence; a digital signature adds a self-contained cryptographic proof anyone can verify.
- Longevity. A digital signature with a trusted timestamp stays verifiable in any compliant PDF reader for years, independent of the platform that created it.
Which signature do you need?
For the contracts most businesses sign - offers, NDAs, leases, vendor and service agreements - a standard electronic signature is legally sufficient on its own. You generally only need a Qualified digital signature for a narrow set of regulated transactions, mostly in the EU. The practical move is to pick a tool that gives you the simple electronic signing experience and applies a digital signature plus a full audit trail automatically, so you get the stronger evidence without the extra friction or cost.
How Document eSign uses both together
You should not have to choose. Document eSign presents a clean electronic signing flow - upload, place fields, send a link, and the signer signs in their browser - while sealing every completed document with a digital signature underneath. Each finished PDF carries a SHA-256 hash, a PAdES-B signature, and a tamper-evident certificate of completion. That is the legal validity of an electronic signature and the cryptographic proof of a digital one, on the same free-forever plan.
Frequently asked questions
Is a digital signature better than an electronic signature?
They are not competing options. Electronic signature is the legal category and digital signature is a security technology that can back it. The strongest setup is an easy electronic signing experience sealed by a digital signature underneath, which is how Document eSign works.
Is every electronic signature a digital signature?
No. Every digital signature is an electronic signature, but many electronic signatures - a typed name or a click - do not use cryptography. A digital signature specifically uses public-key cryptography and a certificate to seal the document.
What is PAdES, and why does it matter?
PAdES (PDF Advanced Electronic Signatures) is the European standard for embedding a digital signature inside a PDF so it can be verified in any compliant reader, even years later. Document eSign applies a PAdES-B seal to every completed document.
Are both types legally binding?
Yes. Both are binding under laws like the US ESIGN Act and EU eIDAS. A digital signature adds cryptographic proof of integrity on top, which strengthens the evidence if a document is ever disputed.
Which type do I need for business contracts?
For everyday business contracts, a standard electronic signature is legally sufficient. Choosing a tool that also applies a digital signature and a full audit trail costs you nothing extra and gives you tamper-evidence you will be glad to have in a dispute.