What is Sign PDF?
PDFBasic's Sign PDF tool lets you add your signature to any PDF document digitally — no printing, signing, and scanning required. Draw your signature using your mouse or touchscreen, type your name in a signature font, or upload an image of your handwritten signature. Place it precisely on the document, resize it, and download the signed PDF instantly.
How to Use Sign PDF Online
Upload your PDF, then create your signature: draw it with your mouse/finger, type your name in a signature font, or upload a signature image. Position the signature anywhere on the document by dragging it. Resize as needed, then click "Apply & Download."
When Should You Use Sign PDF?
Sign PDFs when you need to sign contracts, agreements, or legal documents remotely; authorize purchase orders and invoices; sign permission forms and consent documents; or add your approval to reports and proposals.
Benefits
Use Cases
Remote workers sign contracts and HR documents without office access. Small business owners approve invoices and purchase orders digitally. Parents sign school permission slips and forms. Real estate agents get documents signed during property showings on tablets.
Pro Tips
- Draw signatures with a stylus or finger on touch devices for the most natural look
- Use a dark background when uploading a signature image (white background works best)
- Save your signature for reuse across multiple documents
Common Mistakes to Avoid
- Signing the wrong page or wrong location — preview carefully
- Using a very small signature that isn't legible
- Forgetting to flatten the PDF after signing for security
You Might Also Need
- After signing, secure the document — protect the signed document with a password.
- Lock in your signature by flattening — flatten the PDF to prevent further editing.
- Reduce file size for sharing — compress before emailing the signed document.