Image resolution sizes
Cropping is cutting off top, bottom, left, right or more than one.
Resizing is keeping the whole picture but making it small (by reducing the number of pixels, which reduces the picture quality).
,You canu2019t reduce the size without reducing something else - whatu2019s showing, or quality.
(Thereu2019s no such thing as a free lunch.
),You can get photo editing software to run on a phone, but photo editing software that runs on a computer has more functions, and does a better job.