Is an electronic signature legally binding?
Yes, electronic signatures are widely recognized as legally binding under the ESIGN Act, UETA, and IT Act for commercial agreements.
Sign PDF documents online free with legally valid digital signatures. Draw your signature, type with calligraphy fonts, or upload your signature image.
100% Free & Private — Processed entirely inside your web browser without server uploads
🚀 Open ✍️ Sign PDF OnlineSigning PDF documents traditionally meant printing sheets of paper, signing with a physical pen, scanning the papers back into a computer, and emailing huge attachments. SmallPDF Pro’s Sign PDF tool eliminates this entire hassle with a sleek, 100% digital signing workflow.
You can draw your signature smoothly using your mouse or touchscreen, type your full name in elegant cursive handwriting styles, or upload a pre-existing transparent signature photo. Then simply click anywhere on your PDF to place, scale, and stamp the signature.
Crucially, unlike subscription e-sign platforms that store your confidential legal agreements on their corporate clouds, SmallPDF Pro processes everything locally. Your signature and document never leave your device.
Drag your PDF contract, agreement, or form into the workspace.
Choose to Draw with a pen, Type in stylish cursive fonts, or Upload a signature photo.
Click anywhere on the document canvas to position your signature, and adjust the scale slider.
Click "Apply Signature & Download PDF" to embed the signature vector and download the signed document.
Yes, electronic signatures are widely recognized as legally binding under the ESIGN Act, UETA, and IT Act for commercial agreements.
Yes! The drawing pad fully supports touch gestures on iOS Safari and Android Chrome.
Yes, you can toggle between Official Blue (#1d4ed8), Deep Black (#0f172a), and Crimson Red (#b91c1c).
No. We do not store, log, or transmit your signature. Everything is rendered client-side in browser memory.