Displaying Smaller Version of the Featured Image

[eluviis]

Hi,

I usually display the featured image on my posts automatically. This is the code I use:

/** Custom - Add the featured image section */
add_action( 'genesis_before_entry_content', 'genesis_featured_image' );
function genesis_featured_image() {
	if ( is_singular( array( 'post', 'page', 'specialty', 'event', 'portfolio' ) ) && has_post_thumbnail() ){
		echo '<div id="featured-image">';
		echo get_the_post_thumbnail($thumbnail->ID, 'header');
		echo '</div>';
	}
}

Is there a way I can edit that code so it shows one of the smaller versions of my featured image? I upload all my images at 1140px wide and have them resized to 750px, 330px, etc. I'm optimizing my site for speed, so I'm wanting to display that 750px image rather than the full 1140px photo.

By the way, I was using Magazine Pro, but I'm editing the site for Digital Pro now. Sam applies.

[eluviis]

I kept searching and searching and came upon some code in the WordPress CODEX and used it to modify the code I had. And it works:

/** Custom - Add the featured image section */
add_action( 'genesis_before_entry_content', 'genesis_featured_image' );
function genesis_featured_image() {
	if ( is_singular( array( 'post', 'page', 'specialty', 'event', 'portfolio' ) ) && has_post_thumbnail() ){
		echo '<div id="featured-image">';
		echo get_the_post_thumbnail($thumbnail->ID, 'medium', array( 'class' => 'aligncenter' ));
		echo '</div>';
	}
}

Basically, the trick was to replace the ID "header" with the ID "medium". Now it displays my medium image size.

Interestingly, like with all my post images inside posts, even when you display the medium image, opening the image in a new window or downloading it, yields the full size image. Not sure why it does that. Maybe this is a new feature in WordPress? Or more recent for that matter. Can anyone elaborate?

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