diff --git a/src/_h5ai/client/css/inc/view-details.less b/src/_h5ai/client/css/inc/view-details.less
index c4c636a3..f1bca514 100644
--- a/src/_h5ai/client/css/inc/view-details.less
+++ b/src/_h5ai/client/css/inc/view-details.less
@@ -118,4 +118,20 @@
 	&.size-96 {
 		.view-details-sized(96px)
 	}
+
+	&.size-128 {
+		.view-details-sized(128px)
+	}
+
+	&.size-192 {
+		.view-details-sized(192px)
+	}
+
+	&.size-256 {
+		.view-details-sized(256px)
+	}
+
+	&.size-384 {
+		.view-details-sized(384px)
+	}
 }
diff --git a/src/_h5ai/client/css/inc/view-grid.less b/src/_h5ai/client/css/inc/view-grid.less
index 9cb71c0b..9ba3b4fc 100644
--- a/src/_h5ai/client/css/inc/view-grid.less
+++ b/src/_h5ai/client/css/inc/view-grid.less
@@ -107,4 +107,20 @@
 	&.size-96 {
 		.view-grid-sized(96px)
 	}
+
+	&.size-128 {
+		.view-grid-sized(128px)
+	}
+
+	&.size-192 {
+		.view-grid-sized(192px)
+	}
+
+	&.size-256 {
+		.view-grid-sized(256px)
+	}
+
+	&.size-384 {
+		.view-grid-sized(384px)
+	}
 }
diff --git a/src/_h5ai/client/css/inc/view-icons.less b/src/_h5ai/client/css/inc/view-icons.less
index ecbab927..75f145b2 100644
--- a/src/_h5ai/client/css/inc/view-icons.less
+++ b/src/_h5ai/client/css/inc/view-icons.less
@@ -99,4 +99,20 @@
 	&.size-96 {
 		.view-icons-sized(96px)
 	}
+
+	&.size-128 {
+		.view-icons-sized(128px)
+	}
+
+	&.size-192 {
+		.view-icons-sized(192px)
+	}
+
+	&.size-256 {
+		.view-icons-sized(256px)
+	}
+
+	&.size-384 {
+		.view-icons-sized(384px)
+	}
 }
diff --git a/src/_h5ai/client/js/inc/view/viewmode.js b/src/_h5ai/client/js/inc/view/viewmode.js
index 16189501..db252689 100644
--- a/src/_h5ai/client/js/inc/view/viewmode.js
+++ b/src/_h5ai/client/js/inc/view/viewmode.js
@@ -2,7 +2,7 @@
 modulejs.define('view/viewmode', ['_', '$', 'core/settings', 'core/resource', 'core/store', 'core/event'], function (_, $, allsettings, resource, store, event) {
 
 	var modes = ['details', 'grid', 'icons'],
-		sizes = [16, 24, 32, 48, 64, 96],
+		sizes = [16, 24, 32, 48, 64, 96, 128, 192, 256, 384],
 
 		settings = _.extend({}, {
 			modes: modes,
diff --git a/src/_h5ai/conf/options.json b/src/_h5ai/conf/options.json
index 701dc728..da698f23 100644
--- a/src/_h5ai/conf/options.json
+++ b/src/_h5ai/conf/options.json
@@ -28,7 +28,7 @@ Options
 		is given the view mode is fixed and the selector buttons are hidden.
 		The user selected view mode is also stored local in modern browsers
 		so that it will be persistent.
-	- sizes: array, subset of [16, 24, 32, 48, 64, 96]
+	- sizes: array, subset of [16, 24, 32, 48, 64, 96, 128, 192, 256, 384]
 		the first value indicates the default view mode. If only one value
 		is given the view mode is fixed and the selector buttons are hidden.
 		The user selected view mode is also stored local in modern browsers