E-Signature vs. Digital Signature vs. Wet Signature

"Just sign it electronically" sounds simple — until you're staring at a document that asks for an "electronic signature," a vendor promising "bank-grade digital signatures," and a lawyer somewhere insisting a "wet signature" is still required. These three terms get used interchangeably online, but they're genuinely different things, and knowing which one you actually need can save you a rejected contract or an unnecessary trip to a notary.

Wet signature

A wet signature is the traditional kind: pen on paper, physically written by hand. It's called "wet" because of the ink.

It's the oldest and, in a strange way, the most universally trusted form of signing — every court, bank, and government office recognizes it without question, because there's no ambiguity about what it is. The tradeoff is entirely practical: you need to be in the same physical location as the paper, which means printing, signing, and either scanning or mailing it back. For a two-page rental agreement, that's a lot of friction for very little extra security.

Electronic signature

An electronic signature is any electronic mark, symbol, or process used with the intent to sign — a typed name, a drawn signature on a touchscreen, or an uploaded image, among other forms. See our full explainer in what is an electronic signature?

This is the broadest of the three categories, and it's also the one that covers almost everything people mean when they say "sign this online." Clicking "I agree" on a terms-of-service page, typing your name into a form field, or dragging a drawn signature onto a PDF are all electronic signatures. What makes any of them valid isn't the method — it's that the signer intended to be bound by what they signed, and that intent can usually be shown through context: the act of clicking submit, an email confirmation, a timestamp, an IP address on record.

Digital signature

A digital signature is a specific cryptographic method — using public-key infrastructure — that verifies both the signer's identity and that the document hasn't been altered since signing. It's a more technical, tamper-evident implementation, and it happens to be one way of creating a legally electronic signature.

Think of it less as a way of signing and more as a security layer wrapped around a signature. A digital signature uses a private key unique to the signer to generate a cryptographic "fingerprint" of the document at the moment of signing. If a single character in that document changes afterward — even a typo fix — the fingerprint no longer matches, and any verification software will flag the document as altered. This is why digital signatures show up in places where tampering would be catastrophic: government filings, large financial transactions, and enterprise contract platforms that need an audit trail strong enough to hold up in litigation.

Term	What it is	Typical use
Wet signature	Pen and paper	In-person signing, older paperwork
Electronic signature	Any electronic mark showing intent to sign	Everyday contracts, forms, emails
Digital signature	Cryptographically verified signature	High-security documents, identity-sensitive filings

So which one do you actually need?

For the vast majority of everyday signing needs — contracts, forms, agreements — a simple electronic signature like the ones you can create with SignScribe is legally sufficient. See are electronic signatures legal? for the specific laws that make that true.

A useful way to think about it: ask what happens if the document is later disputed. A freelance contract, a rental agreement, an NDA, a permission slip — if a disagreement ever arose, the electronic record (timestamp, IP, email trail) is already strong evidence of intent, and a typed or drawn signature is more than adequate. A digital signature becomes worth the extra setup when the document's stakes are high enough that tamper-proofing itself is the point — a property deed, a large wire transfer authorization, a regulatory filing. And a wet signature is still occasionally required outright, regardless of how secure your electronic alternative is, simply because a specific law or institution hasn't caught up — wills and certain notarized documents are the classic examples.

Why this distinction matters more than people think

Confusing these terms causes two common mistakes. The first is under-trusting electronic signatures — assuming a typed name "doesn't really count" and printing a document unnecessarily, which just adds friction without adding any actual legal protection. The second, rarer but more consequential, is over-trusting a basic electronic signature for a document that specifically requires the tamper-evidence of a true digital signature or the unambiguous status of a wet one. Knowing which bucket your document falls into — before you sign, not after a dispute — is the entire value of understanding these three terms.

A quick FAQ

Is a scanned signature a digital signature? No — a scanned image of your signature is an electronic signature, not a cryptographic digital signature, even though the word "digital" naturally comes to mind. It's still legally valid for the vast majority of documents, it just doesn't carry the cryptographic tamper-proofing that the term "digital signature" technically refers to.

Do I need special software for an electronic signature? No. A browser tab is enough — tools like SignScribe let you draw, type, or upload a signature and export it as an image, with no installation and no account required.

Can a business require a digital signature instead of a regular electronic one? Yes. Some institutions — banks, government agencies, certain enterprise platforms — set their own requirements above the legal minimum, so it's always worth checking the specific form or platform's instructions rather than assuming any electronic signature will be accepted.

Creating your electronic signature

If you've landed on "I just need a standard electronic signature," SignScribe makes that part painless: draw it by hand, type it in a script font, or upload a photo of a signature you already use, and download it as a transparent PNG, JPG, or scalable SVG in under a minute. No account, no software, nothing stored on a server — just a signature ready to drop into whatever you're signing next.