Only push sizes onto the queue when they're smaller than the original

includes/class-image-processing-queue.php

@@ -139,6 +139,10 @@ public function get_image( $post_id, $sizes, $attr = '' ) {
 					continue;
 				}
 
+				if ( self::is_size_larger_than_original( $post_id, $size ) ) {
+					continue;
+				}
+
 				$item = array(
 					'post_id' => $post_id,
 					'width' => $size[0],
@@ -210,6 +214,28 @@ public static function does_size_already_exist_for_image( $post_id, $size ) {
 			$size_name = self::get_size_name( $size );
 			return isset( $image_meta['sizes'][ $size_name ] );
 		}
+
+		/**
+		 * Check if an image size is larger than the original.
+		 *
+		 * @param int   $post_id Image ID.
+		 * @param array $size array in format array(width,height,crop).
+		 *
+		 * @return bool
+		 */
+		public static function is_size_larger_than_original( $post_id, $size ) {
+			$image_meta = self::get_image_meta( $post_id );
+
+			if ( ! isset( $image_meta['width'] ) || ! isset( $image_meta['height'] ) ) {
+				return true;
+			}
+
+			if ( $size[0] > $image_meta['width'] || $size[1] > $image_meta['height'] ) {
+				return true;
+			}
+
+			return false;
+		}
 	}
 
 }