Sign PDF Online
Fast & Secure
Upload your PDF and visually drag your signature exactly where you want it. Our AI automatically removes the white paper background from your signature!
The Ultimate Visual PDF Signer
Forget the old days of guessing where your signature will land. ReduceSize Visual PDF Signer gives you a live preview of every page in your document. You can simply drag and drop your signature exactly where the dotted line is!
Magic Background Removal
Don't have a transparent PNG of your signature? No problem. Just sign on a blank piece of white paper, click a photo with your phone, and upload it. Our smart client-side algorithm will automatically detect the white paper, make it 100% transparent, and darken your ink so it blends perfectly into the PDF document.
Frequently Asked Questions
Do I need a transparent signature image to sign a PDF?
No. You can simply sign on a plain white paper, take a photo with your phone, and upload it. The tool automatically removes the white background.
Can I sign every page of the PDF at once?
Yes, there is an option to apply your signature to all pages of the document automatically, or you can place it individually per page.
Is the PDF signing process private and secure?
Yes, the entire signing process runs locally in your browser using a client-side engine. Your PDF and signature are never uploaded to any server.