Upload a PDF to sign it using the built-in PDF.js viewer. Look for the signature / pen tool in the toolbar to add your signature.
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Digital PDF signing allows you to add electronic signatures to PDF documents, making them legally binding in many jurisdictions. Unlike physical signatures, digital signatures can be verified for authenticity and provide audit trails.
Why use digital signatures?
Key Features
Select the PDF document you need to sign. Our tool works entirely in your browser - your files never leave your device.
Use the signature tool in the PDF viewer. Choose to draw, type, or upload your signature. Position it anywhere on the document.
Download your signed PDF. Optionally flatten the signature to make it non-editable. Your original file remains unchanged.
Use your mouse, touchpad, or touchscreen to draw your signature freehand.
Best for: Personal touchType your name and choose from multiple signature-style fonts.
Best for: ConsistencyUpload a scanned image of your handwritten signature.
Best for: Exact replicaYes, in most countries and jurisdictions, digital signatures are legally binding for many types of documents. However, there are some exceptions:
Always check your local laws and regulations. For critical documents, consider using certified digital signature services or consult with legal professionals.
These terms are often used interchangeably but have technical differences:
With our "Flatten PDF" option, signatures become part of the page content and cannot be easily removed. However, consider these security measures:
For maximum security, consider our PDF encryption tool after signing.
Our tool supports various image formats for signature uploads:
Tip: Create your signature using our PDF Editor tool and save it as an image for reuse.
Our current tool supports single PDF signing. For multiple documents or batch processing: