Electronic signatures are legally recognised across the UK, EU and US, and you no longer need an expensive subscription to use them. Plenty of tools let you sign or send documents for free — but “free” hides big differences in monthly limits, security and how painful the experience is for the person on the other end. Here’s how five popular free options stack up in 2026, and how to choose.
What to look for in a free e-signature tool
- Free-tier limits: Most providers cap free signatures per month or documents per user.
- Audit trail: A tamper-evident record of who signed, when and from where — essential if a document is ever disputed.
- Signer experience: Can recipients sign on a phone, without creating an account or installing anything?
- Verification: Options like one-time passcode (OTP) add identity assurance.
- Privacy: Are your documents processed in the browser or uploaded to a third-party server?
The comparison at a glance
| Tool | Free tier | Audit trail | Best for |
|---|---|---|---|
| Signed Docs Republic | Free signing & sending in-browser | Yes + OTP | SMB teams wanting a no-cost, full workflow |
| DocuSign (free) | Sign documents sent to you; very limited sending | Yes | Receiving the occasional document |
| Adobe Acrobat (free) | Fill & sign your own PDFs | Limited | Self-signing PDFs you already have |
| SignWell (free) | ~3 documents / month | Yes | Occasional senders |
| Smallpdf eSign (free) | Limited daily tasks | Basic | Quick one-off signatures |
Free tiers change often, so always confirm current limits before relying on one. The table reflects the typical shape of each offer in 2026.
1. Signed Docs Republic
Our own browser-based tool lets you upload a PDF, place signature, date, text and checkbox fields, send it for signature, and track completion — with an audit trail and optional OTP verification built in. There’s nothing to install and recipients can sign from a phone. It’s a strong fit if you want a complete, no-cost workflow rather than just “sign this one file.”
2. DocuSign (free plan)
DocuSign is the best-known name in e-signature. Its free tier is generous for signing documents others send you, but sending your own for signature is tightly limited — that’s reserved for paid plans. Great brand recognition; restrictive if you’re the one initiating documents.
3. Adobe Acrobat Fill & Sign
If your documents are already PDFs and you mainly need to self-sign, Adobe’s free Fill & Sign is reliable and familiar. It’s less suited to multi-party signing workflows with tracking and reminders.
4. SignWell
SignWell offers a clean interface and a free tier covering roughly three documents a month, with audit trails. Good for occasional senders; you’ll hit the cap quickly if signing is a regular part of your work.
5. Smallpdf eSign
Part of the wider Smallpdf toolkit, eSign is handy for quick one-off signatures alongside other PDF tasks, but free usage is limited by daily task caps and it’s lighter on workflow features.
Try free, in-browser signing now
Upload a PDF, add fields, and send it for signature — no install, no credit card.
Start signing free →How to choose
If you only ever receive documents, DocuSign’s free plan or Adobe Fill & Sign will do. If you regularly send documents for others to sign and want audit trails without a subscription, a full free workflow tool will serve you far better. And whatever you pick, prioritise tools that offer a clear audit trail and let recipients sign on mobile without friction — that’s what gets documents actually completed.