To look at somebody/something - Idioms by The Free Dictionary
to look at somebody/something
to look at (someone or something)
Based on or judging from someone's or something's appearance alone. To look at him, you wouldn't think Steve did mixed martial arts on the weekend. To look at it, it's hard to believe that such a small device is full of such powerful hardware.
to ˈlook at somebody/something,
by the ˈlook of somebody/something (informal) judging from the way somebody/something appears: To look at him, you wouldn’t think he was the richest person in the country. ♢ To look at them, you’d never imagine that they tasted so delicious.