Free electronic signature software: 2026 comparison
Which free electronic signature software to choose in 2026? Comparison of Certyneo, Yousign, Adobe, DocuSign Free with limitations and best practices.
Certyneo Team
Writer — Certyneo · About Certyneo
Searching for free electronic signature software in 2026 is a perfectly legitimate approach: for a small business just starting out, a freelancer with limited needs, or simply to test a solution before committing budget. Good news—the market today offers several genuine freemium options, eIDAS-compliant, with legal value equivalent to paid plans. Here is the 2026 comparison of the best free electronic signature software, their differences, their limitations and how to choose.
Free doesn't mean low-cost
Important clarification upfront: a free plan from a reputable publisher (Certyneo, Yousign, DocuSign) is not a legally degraded version. It's exactly the same technology, the same digital certificates, the same audit trail. The difference is quantitative (number of envelopes/month, number of users) or functional (API, integrations, branding), not qualitative. A contract signed on a free plan is just as enforceable as a contract signed on an Enterprise plan at €5000/month.
Certyneo: the most generous for SMEs
Certyneo offers a free plan for life (not a trial period): 5 envelopes per month, SES and AES signature with email OTP, 1 user, complete API included, full audit trail, unlimited document storage. No credit card required at sign-up, no forced conversion after X days. French publisher, France-based hosting, GDPR-compliant. Ideal for: freelancer, SME, sole proprietor, association signing fewer than 5 documents/month.
Yousign: the conditional free plan
Yousign historically had a limited free plan (3 envelopes/month), but policy is evolving: in 2024-2025, a 14-day trial period replaced the permanent freemium on certain segments. Check yousign.com for current policy before choosing. If freemium still exists: quality equivalent to Certyneo, with additional QES access (but paid). Weaknesses: aggressive pricing evolution, uncertainty about free plan continuity.
DocuSign Free Trial: 30 days then conversion
DocuSign no longer offers a true permanent free plan—only a 30-day trial requiring a credit card. After this, automatic conversion to a Personal plan (€10/month) if you forget to cancel. Very convenient for short testing, but not a sustainable free solution. Strengths during trial: all Pro features unlocked. Weaknesses: credit card required, risk of accidental conversion, US company subject to the Cloud Act.
Adobe Acrobat: free but not really eIDAS
Adobe Acrobat Reader (free) offers Fill & Sign functions that let you place a handwritten signature image on a PDF. Warning: this is NOT an electronic signature under eIDAS (no certificate, no audit trail, no certified timestamp). Legally, it's equivalent to gluing a scanned image. Adobe Sign (the real electronic signature solution) starts at €18/month—it's paid, not free. Don't confuse them.
Open source alternatives
A few open source solutions (DocuSeal, OpenSign, SignPDF) can be self-hosted for free. They suit technical teams who can install, maintain, update, secure. Real long-term savings (no subscription), but eIDAS compliance isn't automatic: you must configure the TSA yourself, manage certificates, implement audit. For non-technical SMEs, SaaS freemium remains simpler.
How to choose: decision grid
Choose Certyneo if: you're a freelancer, SME, French association, volume under 5 envelopes/month, French sovereignty matters, need API from the free tier. Choose Yousign if: QES is needed for certain acts (paid), you prefer a more established French player. Choose DocuSign Free Trial if: you must test all Pro features before purchase for enterprise rollout. Avoid Adobe Acrobat Fill & Sign for any document with legal stakes.
The pitfalls of free plans
Three pitfalls to avoid. Pitfall 1: the disguised trial period—some publishers claim "free" but require a credit card and convert after 7 or 30 days. Read the Terms. Pitfall 2: hidden limitation—3 envelopes/month that reset on the 1st, not rolling. Pitfall 3: non-compliance—a "free" solution that doesn't provide an audit trail has no legal value. Systematically verify that your free plan delivers the signed PDF AND the audit certificate.
When to go paid?
Go paid when: you exceed free limits (5-10 envelopes/month regularly), you need reusable templates (NDA, standard quote), you want multiple users (sales + HR + admin), you need branding on signer portal (logo, colours), or you integrate your CRM/ERP via API with significant volumes. Certyneo's paid plans start at €9/month—see /pricing for details.
Start free today
Create a free account on certyneo.com/signup—30 seconds flat, no credit card, 5 envelopes/month for life. To dive deeper into SES vs AES differences, see our article (/blog/signature-simple-vs-avancee). For a full market overview of paid solutions, see our best electronic signature solution 2026 comparison.
Try Certyneo for free
Send your first signature envelope in less than 5 minutes. 5 free envelopes per month, no credit card required.
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