The short answer: with OpenSign™ you can sign documents online for free — upload a file, add your signature, and download it, or send it to others to sign. There's no limit on documents you sign yourself, no software to install, and every signature is legally binding with an audit trail.
Two ways to sign online
Sign it yourself
Use Sign Yourself to add your signature, initials, date and text to any document and download it instantly. There's no cap on how many documents you sign this way.
Request signatures from others
Use Request Signatures to email a secure signing link to one or more recipients. Place fields for each signer, track status, and get notified when everyone has signed.
Step by step
- Create a free account at OpenSign.
- Upload your document (PDF and common formats supported).
- Drag fields for signatures, dates and text.
- Sign yourself, or send for signature.
- Download the completed document and certificate of completion.
What you can sign
- Contracts, agreements and SOWs
- NDAs and offer letters
- Consent, waiver and registration forms
- Invoices, approvals and HR paperwork
Why it's free
OpenSign is an open-source eSignature platform. Self-signing and core features are free for everyone; paid plans only raise limits for high-volume emailed signature requests. Compare it with paid tools in our DocuSign alternatives guide.
Ready to try it? Create a free OpenSign account and start signing documents in minutes — no credit card required. Prefer to run it yourself? OpenSign is 100% open source on GitHub.