taymless

I had some issues with added sizes in my feed img tags and think this is being caused by the new responsive images in WordPress 4.4 (https://make.www.ads-software.com/core/2015/11/10/responsive-images-in-wordpress-4-4/).

I’ve found a way to disable responsive images (https://wordpress.stackexchange.com/questions/211375/how-do-i-disable-responsive-images-in-wp-4-4) and modified it’s only applied to the feed with this filter:

add_filter( 'wp_get_attachment_image_attributes', function( $attr )
{
    if(is_feed())
    {
        if( isset( $attr['sizes'] ) )
            unset( $attr['sizes'] );

        if( isset( $attr['srcset'] ) )
            unset( $attr['srcset'] );
    }

    return $attr;

}, PHP_INT_MAX );