DIFs

JSON:
[{
	"first_name": "John",
	"last_name": "Doe",
	"email": "john.doe@gmail.com"
}, {
	"first_name": "Mary",
	"last_name": "Doe",
	"email": "mary.doe@gmail.com"
}]

XML:

<0>
	<first_name>John</first_name>
	<last_name>Doe</last_name>
	<email>john.doe@gmail.com</email>
</0>
<1>
	<first_name>Mary</first_name>
	<last_name>Doe</last_name>
	<email>mary.doe@gmail.com</email>
</1>

CSV:

first_name,last_name,email
John,Doe,john.doe@gmail.com
Mary,Doe,mary.doe@gmail.com