Sign a Document Online for Free in 2026: The Guide

Signing a document online for free has become the standard for individuals, freelancers, and small businesses: no more need to print, sign manually, scan, and then send back. But free doesn't mean without rules: there are free solutions that comply with French law and the eIDAS regulation, and others that have no legal value. In this guide, we sort through the real free options, their actual limitations, and how to use them without surprises.

What does "free" mean in electronic signature?

Three categories coexist on the market. First, fully free and compliant tools: Certyneo (5 envelopes/month), Yousign (3/month depending on periods), Adobe Sign Free (14-day trial then limited). Second, free but non-compliant tools: Adobe Acrobat Reader with Fill & Sign (no strong legal value), signature images pasted into Word. Third, free trials of paid solutions, limited in time.

The real free plans compliant with eIDAS

For an individual, a freelancer, or a very small business, Certyneo's free plan covers most needs: 5 envelopes per month, SES and AES signature (OTP email), complete audit trail, cryptographically signed PDF, unlimited storage of signed documents. No credit card required, no trial period that automatically switches to a paid subscription. It's a true freemium plan, not a commercial gimmick.

Limitations to know

All free plans have assumed limitations: number of monthly envelopes (generally 3 to 10), number of signatories per envelope (often 1 or 2), no API, no reusable templates, no custom branding. For intensive professional use (more than 10 signatures/month), you need to switch to a paid plan. But for validating a lease, signing an employment contract, getting a quote signed, free is more than enough.

What you absolutely should NOT do

Three free practices to ban absolutely for any document with stakes. One: paste a scanned signature image into Word or PDF. No evidentiary value, risk of repudiation. Two: use Adobe Fill & Sign for serious contracts. Handwritten signature with a mouse has no certificate. Three: send a PDF by email and ask for an OK in return. Email exchanges can constitute consent, but do not constitute an electronic signature within the meaning of eIDAS.

How to sign for free in 3 minutes

With Certyneo: 1) create your free account on certyneo.com/signup (30 seconds, email + password). 2) Upload your PDF. 3) Add your email as a signatory (to self-sign) or your counterpart's email. 4) Place the signature areas. 5) Send. The document comes back signed with certificate, timestamp, and audit trail. Total cost: $0.

The legal value of a free signature

A crucial point often misunderstood: a free electronic signature from an eIDAS-compliant freemium plan has EXACTLY the same legal value as a paid electronic signature at the same level. There is no legal discount on quality. The only difference comes down to features (number of envelopes, API, multi-users). In other words: an employment contract signed on Certyneo's free plan is as enforceable as an employment contract signed on the Pro plan at $30/month.

When to switch to paid

Switch to a paid plan as soon as: you exceed 5-10 signatures/month on a recurring basis, you need an API for CRM integration, you want reusable templates (purchase order, standard NDA), you manage multiple users or roles, you need the QES level (qualified signature) for certain regulated acts. Certyneo's paid plans start at €9/month — see /pricing for details.

Get started for free

Create a free account on certyneo.com/signup and send your first signature in less than 5 minutes. No credit card, no commitment, no forced conversion. To understand the different legal levels (SES, AES, QES), see our complete eIDAS guide at /guide/eidas.