How can I make a document valid with an electronic signature?

By using a professional tool like airSlate SignNow, you can easily apply a legally-binding and court-admissible electronic signature to any document. Create an account and upload the file in PDF, DOC/DOCX, or XLSX format. Add the My Signature field to sign your sample using your typed full name, by drawing your signature with your finger or stylus, or uploading an image of your signature. Whatever you choose, your eSignature will be valid. When finished, save the changes, then download a copy, email it, or invite others to eSign it.