Get smaller size of image, get_the_post_thumbnail

Question

My theme is using this code in a shortcode to get the image of the post. However, this is the full size image and i am looking to get the small thumbnail instead. How could I do this?

   $image_output       = '<div class="x-recent-posts-img">' . get_the_post_thumbnail( get_the_ID(), 'entry', NULL ) . '</div>';

Answer 1

Just change the code to:

$image_output = '<div class="x-recent-posts-img">' . get_the_post_thumbnail( get_the_ID(), 'thumbnail', NULL ) . '</div>';

See in the Codex:

Thumbnail Sizes

get_the_post_thumbnail