I took some photo at home to be used on china visa app, wondering how do I crop to the size so it prints on 4x 6 like a ID photo. % k% m# x; H+ h . d$ ^3 Y* [' V# X/ Z, tI used online software but they all have watermark , o( f. E: B, i+ x* J( _3 ^ 6 b9 }9 S) `8 l1 J+ f z: athanks