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admin_post_thumbnail_size › WordPress Filter Hooks

apply_filters( 'admin_post_thumbnail_size', $size, $thumbnail_id, $post )
Parameters: (3)
  • (string|int[]) $size Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).
    Required: Yes
  • (int) $thumbnail_id Post thumbnail attachment ID.
    Required: Yes
  • (WP_Post) $post The post object associated with the thumbnail.
    Required: Yes
Defined at:

Filters the size used to display the post thumbnail image in the 'Featured image' meta box.

Note: When a theme adds 'post-thumbnail' support, a special 'post-thumbnail' image size is registered, which differs from the 'thumbnail' image size managed via the Settings > Media screen.


$size = apply_filters( 'admin_post_thumbnail_size', $size, $thumbnail_id, $post );