Stringify is used to serialize an object. This is useful if you are going to store the object or transfer the object contents to some other system or component, possibly over a network using a network protocol.

For debugging, you should use a function like console.log, which depending on the client might even offer an interactive UI to explore the object with structurally aware context. Not just print a giant string, which you get from stringify.

Not only used for debugging and also if you log a complex object, the way it gets displayed in the console is not always easy/possible to fully inspect. It will get.. truncated for lack of a better word

Sure, but then you'd be using json_encode, json.dumps, Json.Serialize, etc., not JSON.stringify.

Do people really conflate json and javascript normally though? Java and javacript I get but no one actually says the full json acronym and it basically has an identity of its own.

Yeah, but the function isn't always called stringify