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How to sign a PDF for free (no printing, no scanning)

You don’t need to print, sign and rescan a document to add your signature. With pdfcdf you can sign any PDF directly in your browser — for free, and without your file ever leaving your device.

Sign a PDF in your browser

Open the Sign PDF tool and upload your document. Draw your signature with your mouse or finger, or type your name in a handwriting-style font. Then click on the page to drop your signature, drag it into position, resize it, and download the signed PDF.

Because every tool runs entirely inside your browser, your files are never uploaded to a server. They’re processed on your own device and never leave it — a real difference for anyone handling contracts, IDs, medical records or anything confidential.

Filling forms too

If your PDF has interactive form fields, the Fill & Sign tool lets you type into them and optionally lock the result. For any flat PDF, Sign PDF lets you place text and a signature anywhere.

Try the tools

Sign PDF →Fill & Sign →Flatten PDF →

FAQ

Is an electronic signature on a PDF valid?
For everyday agreements, a simple electronic signature is widely accepted. For legally-certified digital signatures backed by a certificate, use a dedicated certificate-based e-signature service.