Free & Fast. No server uploads, no installs, no watermarks.
Drop your PDF here, or tap to select a file
Your file never leaves this device
The Sign PDF tool lets you add your signature to PDF documents quickly and easily. Draw your signature directly in the browser or upload an existing signature image.
This is a visual signature tool. It places an image of your signature on the PDF. For legally binding contracts, some situations may require a cryptographic digital signature.
All processing happens in your browser. Your documents and signatures are never uploaded to any server.
A signature shows who approved a document, and this tool places yours exactly where it belongs. For labeling a whole document rather than approving it, Add Watermark stamps text like DRAFT or CONFIDENTIAL across every page. And once a document is signed, Password Protect can lock it with AES-256 encryption before you send it, a natural final step for contracts and agreements.
Is my file uploaded anywhere?
No. Your PDF and signatures never leave your device. Everything is processed locally in your browser using JavaScript.
Is this a legally binding signature?
This adds a visual signature. In many contexts this is sufficient. For highly regulated documents, you may need a cryptographic digital signature.
Can I sign multiple pages?
Yes, navigate between pages and add signatures to any page.
What image formats work?
PNG and JPG. PNG with transparent background works best.
Can I move a signature after placing it?
Yes, drag it to reposition. Tap or click a signature to reveal the delete button.