Is a drawn signature on a PDF valid, or do you need a digital certificate?

Last updated: September 17, 2026

Someone sends you a PDF to sign. You can draw your signature on it in a minute, but is that valid, or do you need one of those signatures with a certificate? It depends on what the document is and who is asking. This guide explains the difference in plain terms. It is general information, not legal advice: for anything important, ask the person or organisation that sent the document.

The three kinds of electronic signature

Simple: any electronic sign of agreement. A drawn signature, a scanned one, a typed name, a ticked box. It has legal effect, but if it is disputed you have to prove it was you.
Advanced: uniquely linked to you and to the document, so any later change shows. Typical of signing platforms that verify your identity.
Qualified: an advanced signature made with a certificate from a certified provider. In the EU it has the same legal effect as a handwritten signature in every member state.

In the United States, the ESIGN Act and state laws accept electronic signatures, drawn ones included, for most transactions.

When a drawn signature is usually enough

School permission slips, delivery notes, quotes and order confirmations.
Most agreements between individuals or with small businesses, such as a room rental or the sale of a used item.
Internal company forms, expense sheets, timesheets.
Anything where the other party just needs your agreement in writing and says a signed PDF is fine.

When you will probably need more

Government procedures done online, which normally use the official digital ID of your country.
Documents that by law need a specific form: wills, many property deeds, notarised documents, some employment and family law papers.
Banks and insurers opening accounts or loans, which usually run their own signing process.

How to tell which one they want

Look at the wording. "Print, sign and return" or "a signed copy" usually accepts a drawn signature. "Qualified electronic signature", "digitally signed", "signed with a certificate" or a link to a signing platform means it won't. If a portal only lets you sign after logging in with your digital ID, that is your answer.

When a drawn signature is enough

Use Sign PDF: draw your signature, choose the page and position, and download the signed copy. It works on a phone too, and neither the document nor your signature is uploaded or stored.

Frequently asked questions

Is a scanned handwritten signature better than a drawn one?

Legally both are simple electronic signatures. A scan can look more like your usual signature, but it is not harder to copy.

Can robinpdf add a certificate-based signature?

Yes, if your certificate is a .p12 or .pfx file: Sign with Certificate signs on your device, on a page with no ads or third-party scripts. It cannot use ID cards, USB tokens or cloud signatures, which keep the key where a web page cannot reach it.

Sign a PDF with a drawn signature →