Upload a PDF, draw or type your signature on the canvas, then position it on the page where you want it to appear. Click Apply to finalize.

Is this a legally binding signature?

This tool places a visual signature image on the PDF. Legal validity depends on your jurisdiction and the agreement between parties.

Can I save my signature for reuse?

The signature is created fresh each time for privacy. Your signature data is not stored anywhere.

Are my documents sent to a server?

No. All processing happens in your browser. Your documents and signature never leave your device.

Sign PDF

Draw your signature and click on the preview to place it

Drop PDF here

or click to browse

Choose File

Frequently Asked Questions

What is Sign PDF?

Sign PDF is a free online tool that lets you draw or type your signature and place it anywhere on your PDF document. Whether you need to sign a rental agreement, approve a purchase order, or initial each page of a contract, this tool makes it fast and convenient without printing a single sheet of paper. It is built on the pdf-lib JavaScript library and runs entirely in your browser. Your document and signature are never uploaded to any server, so legally sensitive contracts, financial agreements, and personal forms remain completely private.

When to Use Sign PDF

This tool is ideal whenever you need to add a signature to a document quickly without printing and scanning. Common situations include:

Signing rental or lease agreements sent to you as PDFs by a landlord or property manager.
Approving internal company documents such as expense reports or time-off requests.
Adding your initials to each page of a multi-page legal contract.
Signing school permission slips, medical consent forms, or volunteer waivers.
Completing job offer acceptance letters or freelance service agreements remotely.

How It Works

Upload your PDF by dragging it into the drop zone or selecting it with the file picker. Create your signature by drawing it with your mouse or trackpad on the signature canvas, or type your name and select a handwriting-style font. Position the signature on the desired page by clicking where you want it placed, and resize it as needed. Once you are satisfied, click save and pdf-lib embeds the signature directly into the PDF within your browser. The signed document is ready for immediate download. No internet connection is needed after the page loads, no account is required, no watermark is added, and the service is entirely free.