Digital signatures
Make a digital signature, then sign with it.
Type or draw your signature and download it, free, with no account. Then sign documents online and send them for signature, each sealed with a certificate anyone can check.
Three documents a month free, with no card.
Make your signature
Draw it with a finger or a mouse, or type your name and choose a style.
A transparent PNG, made in your browser and sent nowhere. Put it in a Word file or a PDF, or sign on ShareSign, where the signature is sealed with a certificate.
What a digital signature is
A signature made on a screen, bound to what it signs
A digital signature is a signature made and applied on a computer or a phone: drawn, typed, or placed from an image, and bound to the document it signs so that any change afterwards shows. In everyday use, a digital signature and an electronic signature mean the same thing: signing without paper.
What makes one hold up is not the picture of the signature. It is the record around it: who signed, when, from where, and proof that the document has not changed since. That record is what ShareSign attaches to every document it seals.
Is a digital signature legally binding?
In the United States, the federal ESIGN Act and the state laws based on the Uniform Electronic Transactions Act give an electronic signature the same legal effect as one on paper for most business documents: contracts, offer letters, leases, and agreements of every kind. A few documents, such as wills, have rules of their own.
How a signed document is sealed
- A fingerprint of every file
- Each original file's SHA-256 fingerprint is recorded when it is sent, so a change made to it afterwards shows.
- A certificate on the last page
- Who signed, when, from which address and device, and the fingerprint of each original file.
- A record that cannot be edited
- Every event on the document, from sending to the last signature, each entry chained to the one before it.
- Timestamped by two authorities
- Each night sealed documents are timestamped by DigiCert and Sectigo, so proof of when they existed holds without ShareSign.
- Checked by anyone
- Anyone can drop a signed PDF on sharesign.co/verify to see whether it has changed since it was signed, with no account.
- Signed in any capacity
- One person can sign for a company and in their own name on one link, and the certificate says which is which.
Sign a document online in three steps
01
Upload it
A PDF or a Word document, or several files that are signed as one. ShareSign finds the lines marked for a signature and suggests where each one goes.
Read the guide02
Say who signs
Each signer's name and email, everyone at once or one after another, and your own signature if you sign too.
03
Send it
Each signer opens a link, reads the document, and signs by drawing or typing, on a phone or at a desk, with no account.
04
Keep the sealed PDF
Everyone gets the signed PDF with its certificate, and it stays in your account, timestamped and checkable.