add_image_size( 'size-300x600', 300, 600, true ); add_image_size( 'size-590x880', 590, 880, true ); add_image_size( 'size-530x795', 530, 895, true ); add_image_size( 'size-400x540', 400, 540, true ); add_image_size( 'size-1000x730', 1000, 730, true ); add_image_size( 'size-1220x730', 1220, 730, true ); add_image_size( 'size-1300x900', 1300, 900, true );
put this on functions.php
change it remove or add more
first part ‘size-300×600‘ is the naming you will see second part 300 , 600 is the size and true for croping.