Sign a PDF online, with no account or subscription

You have a PDF document to sign, just once, and you want neither to create an account nor to take out a monthly subscription for a one-off need. This is exactly the case 1-signature exists for.

How it works

1. You enter your email address, then type in the code we send you. Check your spam folder if need be.
2. You state your first name and surname, as they will appear on the signature.
3. You upload your PDF and place the signature box where you want it.
4. You choose your signature level, then pay in stars.
5. You sign, then download the signed document and its evidence file.

There is nothing to install: everything happens in the browser, on a computer, tablet or phone.

What you get

• The signed document, in PAdES-B-LT format, readable in any PDF reader: the signature is visible in it, where you chose, with your signature mark and your name.
• An evidence file, which records how the signing took place and allows the signature to be verified.
• A qualified timestamp, which fixes the date of the signature in a way that can be relied upon against third parties.

Both files remain available for download for seven days. After that, we do not keep them: save them on your own device.

Which level to choose

Six levels are offered, from the simplest to the most secure. Level 1 is enough for a low-stakes document; an ordinary contractual commitment benefits from having your identity verified, which level 3 does through FranceConnect (the French government's identity login service); an important deed, or one required in qualified form, calls for levels 5 or 6.

What cannot be signed here

• A file that is not a PDF: first export it to PDF from your software.
• A password-protected PDF, or one locked against modification.
• A document that several people must sign together, in a single workflow: 1-signature has one person sign, for themselves. Each person can, however, sign in turn, on their own: a PDF that is already signed is accepted, and its signature is preserved.
• Deeds that the law reserves to another form: the French Civil Code (Code civil, Article 1175) excludes from electronic form certain deeds relating to family law and inheritance, as well as certain securities.