Deactivate image dimensions of Guest Authors?

They’re created so that you can use one of them if you’re showing avatars for guest authors. Because you can show avatars at different sizes, I thought it would be wise to pre-generate some of them.

You’re welcome to remove the sizes using the filter.

what filter?

coauthors_guest_author_avatar_sizes

thnx! I removed the code from 123-133. Btw why you don’t use the mail of the guest authors that have registered on gravatar?

I wouldn’t recommend removing the code. Instead you should apply a filter.

It uses the email for the gravatar if no featured image is set.

ok, and how i apply a filter?

Something like this should work (in your theme’s functions.php):

add_filter( 'coauthors_guest_author_avatar_sizes', 'dbx_avatar_sizes' );
function dbx_avatar_sizes() {
    return array();
}