Add your electronic signature to any PDF document online for free. Draw, type, or upload your signature image.
Our PDF signing tool lets you place a handwritten-style signature anywhere on your document. Draw with your mouse or finger, type your name in a signature font, or upload an image of your signature.
Perfect for signing contracts, agreements, forms, and letters without printing. Your signed PDF looks professional and is ready to share or archive.
Select the PDF you need to sign by clicking or dragging it.
Draw, type, or upload your signature. Then position it on the page.
Download your professionally signed PDF document immediately.
Your files never leave your device. Everything runs directly in your browser using JavaScript — no server, no cloud, no data collection. Your documents stay private.
Electronic signatures are legally valid in most countries under laws like eIDAS (EU) and ESIGN Act (USA).
Your signature is saved in your browser's localStorage for convenient reuse.
Yes, you can add multiple signature fields to the same document.
Yes, the signature is permanently embedded into the PDF.
Yes — PDFInOne is a completely free alternative to iLovePDF, Smallpdf, PDF24, and Adobe Acrobat online. Unlike those services, PDFInOne processes everything locally in your browser: no file uploads, no account required, no file size limits, and no watermarks.