| A | ↘ | B | Images_Via_Imgix got worse |
| ⇢ | D | Images_Via_Imgix::image_downsize() added | |
| ⇢ | A | Images_Via_Imgix::get_all_defined_sizes() added | |
| ⇢ | A | compability.php ➔ wp_get_additional_image_sizes() added | |
| A | ↛ | Images_Via_Imgix::replace_host_in_srcset() removed | |
| A | ↛ | Images_Via_Imgix::convert_filename_to_size_args() removed |