diff --git a/src/wp-admin/edit-form-blocks.php b/src/wp-admin/edit-form-blocks.php
index 3be4e8797a..0d690ef4ae 100644
--- a/src/wp-admin/edit-form-blocks.php
+++ b/src/wp-admin/edit-form-blocks.php
@@ -132,9 +132,10 @@ wp_localize_script( 'wp-editor', '_wpMetaBoxUrl', $meta_box_url );
  * Initialize the editor.
  */
 
-$align_wide    = get_theme_support( 'align-wide' );
-$color_palette = current( (array) get_theme_support( 'editor-color-palette' ) );
-$font_sizes    = current( (array) get_theme_support( 'editor-font-sizes' ) );
+$align_wide       = get_theme_support( 'align-wide' );
+$color_palette    = current( (array) get_theme_support( 'editor-color-palette' ) );
+$font_sizes       = current( (array) get_theme_support( 'editor-font-sizes' ) );
+$gradient_presets = current( (array) get_theme_support( 'editor-gradient-presets' ) );
 
 /**
  * Filters the allowed block types for the editor, defaulting to true (all
@@ -226,6 +227,15 @@ foreach ( $image_size_names as $image_size_slug => $image_size_name ) {
 	);
 }
 
+$image_dimensions = array();
+$all_sizes        = wp_get_registered_image_subsizes();
+foreach ( $available_image_sizes as $size ) {
+	$key = $size['slug'];
+	if ( isset( $all_sizes[ $key ] ) ) {
+		$image_dimensions[ $key ] = $all_sizes[ $key ];
+	}
+}
+
 // Lock settings.
 $user_id = wp_check_post_lock( $post->ID );
 if ( $user_id ) {
@@ -278,6 +288,7 @@ $editor_settings = array(
 	'allowedBlockTypes'      => $allowed_block_types,
 	'disableCustomColors'    => get_theme_support( 'disable-custom-colors' ),
 	'disableCustomFontSizes' => get_theme_support( 'disable-custom-font-sizes' ),
+	'disableCustomGradients' => get_theme_support( 'disable-custom-gradients' ),
 	'disablePostFormats'     => ! current_theme_supports( 'post-formats' ),
 	/** This filter is documented in wp-admin/edit-form-advanced.php */
 	'titlePlaceholder'       => apply_filters( 'enter_title_here', __( 'Add title' ), $post ),
@@ -288,6 +299,7 @@ $editor_settings = array(
 	'allowedMimeTypes'       => get_allowed_mime_types(),
 	'styles'                 => $styles,
 	'imageSizes'             => $available_image_sizes,
+	'imageDimensions'        => $image_dimensions,
 	'richEditingEnabled'     => user_can_richedit(),
 	'postLock'               => $lock_details,
 	'postLockUtils'          => array(
@@ -320,6 +332,10 @@ if ( false !== $font_sizes ) {
 	$editor_settings['fontSizes'] = $font_sizes;
 }
 
+if ( false !== $gradient_presets ) {
+	$editor_settings['gradients'] = $gradient_presets;
+}
+
 if ( ! empty( $post_type_object->template ) ) {
 	$editor_settings['template']     = $post_type_object->template;
 	$editor_settings['templateLock'] = ! empty( $post_type_object->template_lock ) ? $post_type_object->template_lock : false;