apply_filters( 'get_image_tag_class', string $class, int $id, string $align, string|int[] $size )

Parameters

$class

(string) CSS class name or space-separated list of classes.

$id

(int) Attachment ID.

$align

(string) Part of the class name for aligning the image.

$size

(string|int[]) Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).