Sign PDF
Draw or upload a visual signature and place it securely on any PDF page.
Visual Signature Notice
This tool adds a visual signature to your PDF document. It is not a cryptographic digital certificate / PKI signature. All drawing and placement happens 100% locally on your device.
Drop your PDF here to sign
Draw or upload your signature and place it anywhere on your document
How to Use Sign PDF
Upload PDF
Select the document you need to sign.
Create Signature
Draw your signature or upload an image.
Position & Save
Drag to position on the page, resize, and export.
Key Capabilities
Local Execution
Captures your signature mark as a high-density vector canvas, maps coordinate positions to PDF page units, and embeds the image into the PDF stream locally.
- •Use a tablet or smartphone touch screen for natural handwriting signature curves.
- •This produces a visual signature mark, not a cryptographic PKI digital certificate.
Electronic Signature Placement & Coordinate Injection Architecture
Visual Electronic Signature Placement
Create smooth vector signatures using touch, stylus, or mouse, or upload a clean signature scan. The signature is placed interactively onto any page and scaled with precision.
Transparent Alpha Blending
Signatures are embedded as high-resolution transparent image streams over the signature line, preserving the underlying contract text without opaque white box artifacts.
Electronic vs Cryptographic Digital Signatures
This tool applies visual electronic signatures suitable for standard business agreements, purchase orders, and rental contracts. It does not issue PKI cryptographic certificates (X.509 certificates).
- •Signatures are embedded directly into the document content stream in local memory.
- •Documents remain fully editable unless subsequently flattened.
- •Zero server storage ensures personal signature handwriting is never stored on third-party servers.
Frequently Asked Questions
Is this a cryptographic digital certificate?↓
No. This tool adds a visual signature mark to the PDF page. It is not a cryptographic digital certificate or PKI signature.
Is my signature stored on your servers?↓
Never. PDFSimplify has no backend servers or databases. Your signature exists only in your browser memory during the session.
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