PDF Sign
Updated June 1, 2025Draw or upload your signature and place it anywhere on a PDF to sign it.
Select a PDF to sign
Features
- Draw your signature directly on screen
- Upload a signature image (PNG recommended)
- Place signature on any PDF page
- Position and resize signature freely
- Preview signature placement before finalizing
- 100% client-side—your signature stays local
Common Use Cases
- Digitally sign contracts and agreements
- Sign permission slips and forms without printing
- Add executive signatures to proposals
- Sign invoices and purchase orders
- Digitally approve documents remotely
PDF Signature Explained
PDF signing adds a visual signature image to your PDF document. This is a digital version of your handwritten signature—not to be confused with cryptographic digital signatures that provide authentication and integrity verification.
Visual signature vs. digital signature: Our tool adds a visual signature (an image of your handwriting) to a PDF. This doesn't provide legal non-repudiation or tamper-proofing like a cryptographic digital signature would. However, for most business and personal use, visual signatures are sufficient.
Creating your signature: You can draw it directly using your mouse, trackpad, or touch screen—or upload a scanned/photo of your physical signature. For best results, sign on white paper with a dark pen and scan at 300 DPI.
Placement: Drag the signature to the correct position on the page. Common placements include the signature line at the bottom of a letter, a contract page, or any designated signing area.
Examples
Original: 5-page contract with signature line
Sign: Draw signature, place on signature line
Result: Signed contract PDF ready to returnSignature source: Scanned PNG at 300 DPI
Place on: Letterhead, bottom right
Result: Professionally signed letterOriginal: School permission form PDF
Sign: Draw signature, place on parent signature line
Result: Signed form ready to submitFrequently Asked Questions
Visual signatures can be legally binding in many jurisdictions, but this tool provides visual signatures only—not cryptographic digital signatures. For legally sensitive documents, consider using a dedicated e-signature service that provides audit trails.
Yes! You can drag to reposition and use handles to resize before finalizing. Once you download the signed PDF, the signature becomes a permanent part of the document.
PNG with transparency works best. Sign on a clean white background and remove the background for a clean signature overlay. JPEG is also supported but won't have transparency.
Currently, you sign one page at a time. Navigate to each page that needs a signature and place it individually. This gives you precise control over each signature placement.
All processing happens in your browser. Your signature never leaves your device. However, the signed PDF can be shared, so be mindful of where you distribute signed documents.
💡 Tips
- Use a dark pen on white paper for the cleanest scanned signature
- Remove the background from your signature image for a professional look
- Preview the signed page before downloading to verify placement
- Keep your signature image file secure—anyone with it can "sign" documents