Remove WordPress automatic cropping
<?php
/**
* Remove standard image sizes so that these sizes are not created during the Media Upload process
*
* @param $sizes, array of default images
* @return $sizes, new array of images
*/
function cn_image_sizes( $sizes) {
unset( $sizes['thumbnail']);
unset( $sizes['medium']);
unset( $sizes['large']);
return $sizes;
}
add_filter('intermediate_image_sizes_advanced', 'cn_image_sizes');
?>