by sight

listen to the pronunciation of by sight
English - Turkish
sima olarak

Tom'u sima olarak tanıyor musun? - Do you know Tom by sight?

Tom beni sima olarak tanır, bundan eminim. - Tom knows me by sight, I'm sure of that.

şahsen

Onu şahsen tanırım fakat ismen değil. - I know him by sight, but not by name.

Onu ismen tanırım fakat şahsen değil. - I know her by name, but not by sight.

English - English
according to a superficial knowledge, according to a first impression