diff --git a/README.txt b/README.txt
index d339828..045fc72 100644
--- a/README.txt
+++ b/README.txt
@@ -107,6 +107,7 @@ Fixed:
 * Notices getting injected into plugin navigation
 * Do not expose internal methods to WP CLI commands
 * WP CLI command only processing the first 10 images
+* Auto resize feature using incorrect descriptors
 
 = 1.6.0 - 12.11.2023 =
 
diff --git a/app/class-cli.php b/app/class-cli.php
index 49b936a..8658711 100644
--- a/app/class-cli.php
+++ b/app/class-cli.php
@@ -126,20 +126,20 @@ private function offload_all() {
 		$progress = WP_CLI\Utils\make_progress_bar( __( 'Offloading images', 'cf-images' ), $images->found_posts );
 
 		foreach ( $images->posts as $attachment ) {
-			$metadata = wp_get_attachment_metadata( $attachment->ID );
+			$metadata = wp_get_attachment_metadata( $attachment );
 			if ( false === $metadata ) {
 				$errors[] = sprintf( /* translators: %d - attachment ID */
 					esc_html__( 'Image metadata not found (attachment ID: %d).', 'cf-images' ),
-					$attachment->ID
+					$attachment
 				);
 			} else {
-				( new Media() )->upload_image( $metadata, $attachment->ID );
+				( new Media() )->upload_image( $metadata, $attachment );
 
 				if ( is_wp_error( Core::get_error() ) ) {
 					$errors[] = sprintf( /* translators: %1$s - error message, %2$d - attachment ID */
 						esc_html__( '%1$s (attachment ID: %2$d).', 'cf-images' ),
 						esc_html( Core::get_error()->get_error_message() ),
-						$attachment->ID
+						$attachment
 					);
 				}
 			}
diff --git a/app/modules/class-auto-resize.php b/app/modules/class-auto-resize.php
index ac76f2a..83896ea 100644
--- a/app/modules/class-auto-resize.php
+++ b/app/modules/class-auto-resize.php
@@ -80,7 +80,7 @@ public function add_srcset_to_image( string $image_dom, Image $image ): string {
 				break;
 			}
 
-			$srcset[] = $image->get_cf_image() . 'w=' . $size . ' ' . $size . 'px';
+			$srcset[] = $image->get_cf_image() . 'w=' . $size . ' ' . $size . 'w';
 		}
 
 		unset( $size );
@@ -90,7 +90,7 @@ public function add_srcset_to_image( string $image_dom, Image $image ): string {
 		}
 
 		// Add the original image to the srcset.
-		$srcset[] = $image->get_cf_image() . 'w=' . $image->get_width() . ' ' . $image->get_width() . 'px';
+		$srcset[] = $image->get_cf_image() . 'w=' . $image->get_width() . ' ' . $image->get_width() . 'w';
 
 		// Check if there is already a 'sizes' attribute.
 		$sizes = strpos( $image_dom, ' sizes=' );