How do you get the full size url of an attachment image

Question

I do not see a way to get the URL to the full sized image of an attachment.

Yes, i can use get_the_post_thumbnail_url($post->ID, 'full'), but that is of no help if the image is not the featured image.

wp_get_attachment_metadata on my attachment does not show a full size, so therefore wp_get_attachment_image_src($imageID, 'full') returns nothing.

How do I get the full version of an image given the attachment ID?

Answer 1

I solved this using wp_get_attachment_url($imageID);

But, you can also use wp_get_attachment_image_url($imageID, 'full')

Answer 2

I think you're overthinking the system. Unfortunately the nomenclature isn't helping. The Thumbnail here is the actual image when you use get_the_post_thumbnail_url().

as an example. Say today you uploaded an image called myimage.jpg.

That would go, if you're storing images by date into this directory: /wp-content/uploads/2017/07/myimage.jpg.

Now when you call :

$featured_img_url = get_the_post_thumbnail_url('full');  //(or leave the parameter blank)

echo $featured_img_url;

you would get:

http://www.example.com/wp-content/uploads/2017/07/myimage.jpg

On the other hand if you used this code:

$featured_img_url = get_the_post_thumbnail_url('thumbnail');  //(or choose a different thumbnail size..medium...large...)

echo $featured_img_url;

it would return:

http://www.example.com/wp-content/uploads/2017/07/myimage30x30.jpg

the autogenerated image based on your thumbnail settings.

to avoid the naming confusion you could also try...

 wp_get_attachment_image_url()

but this requires the actual attachment id, not post id, whether or not you're in the loop.

$imgid = 6; //need to get it dynamically
$imgurldesktop = wp_get_attachment_image_url( $imgid, '' ); //use default image size
$imgurlmobile = wp_get_attachment_image_url( $imgid, 'home-slide-img-mobile' ); //use custom set size