Take the tour ×  i'm trying to add image size in media library
screen so will be simply to handle images. Anyone does it before
me? Any help appreciated. Francesco  share|improve this question
Codex: add_image_size(); –  kaiser Oct 12 '11 at 19:59
Investigating this Q&A, I ended up assembling a two sortable
columns solution (width & height). I posted it in this other
question because there the sortable functionality is being
asked... But @Rarst answer and link got me started in the first
place. –  brasofilo Jun 5 '12 at 14:41 add comment  1 Answer
Code based on Custom Sortable Columns
add_filter('manage_upload_columns', 'size_column_register');
function size_column_register($columns) {
$columns['dimensions'] = 'Dimensions';      return $columns;
add_action('manage_media_custom_column', 'size_column_display',
10, 2);  function size_column_display($column_name, $post_id) {
if( 'dimensions' != $column_name ||
!wp_attachment_is_image($post_id))      list($url, $width,
$height) = wp_get_attachment_im