100% private & secure
Your signature is created entirely on your device - files never leave your computer.
Sign PDF Online Free
Add your signature to any PDF in seconds. Draw it on the canvas, upload a signature image, or type it - then place it exactly where you want on the page.
Drop your PDF here or click to browse
Processed 100% in your browser ยท Draw or upload your signature
Click to upload a signature image (PNG/JPG)
Click the preview below to place your signature, then drag to reposition it.
Why choose our PDF sign tool
Fast, private and free.
Two ways to sign
Draw on the canvas, or upload an existing signature image.
Place it anywhere
Click to place your signature, then drag to fine-tune its position and size.
Done in three easy steps
From start to download in under a minute.
Choose your PDF
Drag the PDF you want to sign into the dashed area, or click to browse your files.
Create your signature
Draw your signature on the canvas, or upload a signature image.
Place and download
Click on the page to place your signature, adjust it, then download.
Sign your PDF online
Add an electronic signature to any PDF right in your browser. Draw your signature by hand on the canvas, or upload a signature image, and pdf-lib embeds it onto the page you choose - no server, no upload, no registration required.
Contracts, confirmation forms, authorization letters, approval sheets - sign your name and it takes effect right away. Your document never leaves your device.
Common use cases
- Signing contracts - add your handwritten signature to electronic contracts.
- Confirming orders - sign confirmation forms and finalize them fast.
- Approval workflows - sign approval documents and leave a clear record.
Why it beats desktop software
- Works anywhere - no install needed, sign from any browser on phone or desktop.
- Zero privacy risk - your signature and file are both processed locally.
- Real handwriting - the canvas captures your natural pen strokes.
Frequently asked questions
Answers to common questions.
Is signing a PDF really free?
Yes - completely free with no watermark. All processing happens locally in your browser.
Is an electronic signature legally valid?
This tool creates a digital image of your handwritten signature. Whether it is legally binding depends on the electronic signature laws in your jurisdiction - we recommend keeping a record of the signing.
Will my file be uploaded?
No. Your file and signature are processed locally on your device and are never uploaded to any server.