How to Sign a PDF Online
- Upload your PDF document.
- Draw your signature with your mouse/finger, or type your name.
- Click on the page to place your signature where you want it.
- Resize and drag to fine-tune the position.
- Click "Sign & Download PDF" to get your signed document.
Your signature and document never leave your browser. Everything is processed locally — no server uploads, no data stored.
Is This a Legal Signature?
Electronic signatures are legally recognized in most countries under laws like the U.S. ESIGN Act and EU eIDAS regulation. JustPDF embeds your signature directly into the PDF file, making it suitable for contracts, agreements, and forms that accept electronic signatures.
Frequently Asked Questions
Can I sign on mobile?
Yes. The signature pad works with touch input, so you can draw your signature with your finger on phones and tablets.
Can I add multiple signatures?
Currently you can place one signature per document. Multi-signature support is coming soon.
Is my signature stored?
No. Your signature exists only in your browser session and is never saved or transmitted anywhere.