To notarize a document means to have a special official called a notary public witness your signature and verify your identity, then stamp the document with their official seal. This process makes the document more trustworthy and can make it legally binding.

Imagine your parents are buying a house. Before the sale becomes official, they'll sign stacks of important papers, and many of those signatures need to be notarized. The notary checks their driver's licenses to confirm they're really who they claim to be, watches them sign, then stamps each page with an official seal and adds their own signature. That stamp tells everyone: “Yes, I personally watched these people sign this document, and I verified their identities.”

Notaries public (that's the proper plural) work at banks, law offices, and shipping stores, or sometimes operate independently. They've been trained and licensed by their state government to perform this witnessing service. You might need documents notarized for things like permission to travel with your school team or real estate transactions.

The notary doesn't decide whether what you're signing is fair or smart: they simply verify that you are who you say you are and that you're signing willingly. Their seal transforms an ordinary signature into proof that can hold up in court or satisfy strict legal requirements.