Sign PDF Documents Online
Fast, private in-browser document signing. Draw, type, or upload your signature with one-click placement.
Sign PDF Document
Create, save, and stamp transparent signatures, initials, and date marks onto PDF pages locally.
Drag & drop image files here, or browse
Select or drop a contract, agreement, or form to sign.
How to use Sign PDF Documents Online
Select Document
Choose any agreement, contract, or form requiring a signature.
Create or Choose Stamp
Draw your signature, type with a script font, or choose a formatted date stamp.
Place & Save
Click on the document page where the signature should appear and download your signed PDF.
Why use ImgZero for Sign PDF Documents Online?
Frequently Asked Questions
Are my signature images uploaded or stored on any server?
No. All signatures and signed documents exist strictly within your browser's private session memory and are never transmitted to any cloud server.
Does uploaded signature background removal work automatically?
Yes. When you upload a photo of a signature on paper, ImgZero automatically removes the white paper background and isolates the dark ink into a transparent stamp.
100% Client-Side Privacy Guarantee
Your files stay on your machine. No server uploads and no file-content tracking.