For the great majority of everyday documents, electronic signatures are legally valid in the United States. Two laws establish this: the federal ESIGN Act and the Uniform Electronic Transactions Act (UETA), adopted by nearly every state.
In broad terms, these laws say a signature, contract or record cannot be denied legal effect simply because it is electronic, provided the parties intended to sign and agreed to do business electronically.
A few categories, such as certain wills, court orders and specific notices, may still require paper or special handling. FreeSign is intended for ordinary agreements and forms; if a document has unusual legal requirements, check with a qualified professional. This article is general information, not legal advice.