diff --git a/src/Form/DFG3dViewerConfigForm.php b/src/Form/DFG3dViewerConfigForm.php
index b52fbae..b2f4a4c 100644
--- a/src/Form/DFG3dViewerConfigForm.php
+++ b/src/Form/DFG3dViewerConfigForm.php
@@ -67,6 +67,19 @@ class DFG3dViewerConfigForm extends FormBase {
 
 	$form['#attached']['library'][] = 'dfg_3dviewer/dfg_3dviewer.config_form';
 
+	$full_mode_states = [
+		'visible' => [
+			':input[name="dfg_3dviewer_lightweight"]' => ['checked' => FALSE],
+		],
+	];
+
+	$form['dfg_3dviewer_lightweight'] = [
+		'#default_value' => $default_settings['lightweight'],
+		'#type' => 'checkbox',
+		'#title' => $this->t('<b>Lightweight</b> version. If checked, 3D Viewer will provide only basic operations.'),
+		'#required' => false,
+    ];
+
 	$form['dfg_3dviewer_main_url'] = [
 		'#default_value' => $default_settings['main_url'],
 		'#type' => 'textfield',
@@ -86,14 +99,16 @@ class DFG3dViewerConfigForm extends FormBase {
 		'#default_value' => $default_settings['metadata_url'],
 		'#type' => 'textfield',
 		'#title' => $this->t('Metadata URL'),
-		'#description' => '<b>URL</b> of the instance that serves metadata content'
+		'#description' => '<b>URL</b> of the instance that serves metadata content',
+		'#states' => $full_mode_states,
     ];
 
 	$form['dfg_3dviewer_json_export_base_url'] = [
 		'#default_value' => $default_settings['json_export_base_url'],
 		'#type' => 'textfield',
 		'#title' => $this->t('JSON Export Base URL'),
-		'#description' => '<b>Base URL</b> of the instance that serves JSON export, e.g. https://repository.covher.eu'
+		'#description' => '<b>Base URL</b> of the instance that serves JSON export, e.g. https://repository.covher.eu',
+		'#states' => $full_mode_states,
     ];
 
 	$form['dfg_3dviewer_container'] = [
@@ -133,21 +148,24 @@ class DFG3dViewerConfigForm extends FormBase {
 		'#type' => 'textfield',
 		'#title' => $this->t('API 3D File Field'),
 		'#required' => false,
-		'#description' => '<b>ID or machine name</b> of the field that should populate API `3D_file`'
+		'#description' => '<b>ID or machine name</b> of the field that should populate API `3D_file`',
+		'#states' => $full_mode_states,
     ];
 
 	$form['dfg_3dviewer_image_generation'] = [
 		'#default_value' => $default_settings['image_generation'],
 		'#type' => 'textfield',
 		'#title' => $this->t('Image Generation'),
-		'#description' => '<b>ID</b> of the bundle for the entity given in wisski pathbuilder for image_generation field'
+		'#description' => '<b>ID</b> of the bundle for the entity given in wisski pathbuilder for image_generation field',
+		'#states' => $full_mode_states,
     ];
 
 	$form['dfg_3dviewer_field_df'] = [
 		'#default_value' => $default_settings['field_df'],
 		'#type' => 'textfield',
 		'#title' => $this->t('Field DF'),
-		'#description' => 'Name of the field given for <b>field_df</b>'
+		'#description' => 'Name of the field given for <b>field_df</b>',
+		'#states' => $full_mode_states,
     ];
 
 	$form['dfg_3dviewer_export_viewer'] = [
@@ -155,6 +173,7 @@ class DFG3dViewerConfigForm extends FormBase {
 		'#type' => 'textfield',
 		'#title' => $this->t('Export Viewer Field'),
 		'#description' => 'Name of the field given for <b>export_viewer</b>',
+		'#states' => $full_mode_states,
     ];
 
 	$form['dfg_3dviewer_export_viewer_url'] = [
@@ -162,6 +181,7 @@ class DFG3dViewerConfigForm extends FormBase {
 		'#type' => 'textfield',
 		'#title' => $this->t('Export Viewer URL'),
 		'#description' => 'URL for the export viewer',
+		'#states' => $full_mode_states,
     ];
 
 	$form['scale_wrapper'] = [
@@ -197,7 +217,8 @@ class DFG3dViewerConfigForm extends FormBase {
 		'#type' => 'container',
 		'#attributes' => [
 			'class' => ['gallery-fields-wrapper', 'gallery-container'],
-		]
+		],
+		'#states' => $full_mode_states,
 	];
 
 	$form['gallery_wrapper']['dfg_3dviewer_gallery_container'] = [
@@ -256,13 +277,6 @@ class DFG3dViewerConfigForm extends FormBase {
 		'#description' => '<b>ID</b> that allows get more specific data from WissKI',
     ];
 
-	$form['dfg_3dviewer_lightweight'] = [
-		'#default_value' => $default_settings['lightweight'],
-		'#type' => 'checkbox',
-		'#title' => $this->t('<b>Lightweight</b> version. If checked, 3D Viewer will provide only basic operations.'),
-		'#required' => false
-    ];
-
     $form['submit'] = [
 		'#type' => 'submit',
 		'#value' => $this->t('Submit'),