diff --git a/README.md b/README.md
index 4693fed1..c2f38695 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ The `QuillToolbar` class lets you customise which formatting options are availab
 ### Font Size
 Within the editor toolbar, a drop-down with font-sizing capabilties is available.  This can be enabled or disabled with `showFontSize`.  
 
-When enabled, the default font-size values can be modified via _optional_ `fontSizeValues`.  `fontSizeValues` accepts a `Map<String, String>` consisting of a `String` title for the font size and an `int` value for the font size.  Example:
+When enabled, the default font-size values can be modified via _optional_ `fontSizeValues`.  `fontSizeValues` accepts a `Map<String, String>` consisting of a `String` title for the font size and an `String` value for the font size.  Example:
 ```
 fontSizeValues: const {'Small': '8', 'Medium': '24', 'Large': '46'}
 ```
diff --git a/lib/src/utils/font.dart b/lib/src/utils/font.dart
index cf69a676..4962a9a2 100644
--- a/lib/src/utils/font.dart
+++ b/lib/src/utils/font.dart
@@ -1,5 +1,9 @@
-double getFontSize(dynamic sizeValue) {
-  if (sizeValue.value is double) {
+dynamic getFontSize(dynamic sizeValue) {
+  if (sizeValue is String && ['small', 'large', 'huge'].contains(sizeValue)) {
+    return sizeValue;
+  }
+
+  if (sizeValue is double) {
     return sizeValue;
   }
 
@@ -7,12 +11,10 @@ double getFontSize(dynamic sizeValue) {
     return sizeValue.toDouble();
   }
 
-  double? fontSize;
-  if (sizeValue is String) {
-    fontSize = double.tryParse(sizeValue);
-    if (fontSize == null) {
-      throw 'Invalid size $sizeValue';
-    }
+  assert(sizeValue is String);
+  final fontSize = double.tryParse(sizeValue);
+  if (fontSize == null) {
+    throw 'Invalid size $sizeValue';
   }
-  return fontSize!;
+  return fontSize;
 }
diff --git a/lib/src/widgets/toolbar.dart b/lib/src/widgets/toolbar.dart
index 70883572..0fd561f9 100644
--- a/lib/src/widgets/toolbar.dart
+++ b/lib/src/widgets/toolbar.dart
@@ -7,6 +7,7 @@ import '../models/documents/attribute.dart';
 import '../models/themes/quill_custom_icon.dart';
 import '../models/themes/quill_dialog_theme.dart';
 import '../models/themes/quill_icon_theme.dart';
+import '../utils/font.dart';
 import 'controller.dart';
 import 'toolbar/arrow_indicated_button_list.dart';
 import 'toolbar/camera_button.dart';
@@ -114,8 +115,8 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
     WebVideoPickImpl? webVideoPickImpl,
     List<QuillCustomIcon> customIcons = const [],
 
-    ///Map of font sizes in [int]
-    Map<String, int>? fontSizeValues,
+    ///Map of font sizes in string
+    Map<String, String>? fontSizeValues,
     int? initialFontSizeValue,
 
     ///The theme to use for the icons in the toolbar, uses type [QuillIconTheme]
@@ -155,20 +156,8 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
     ];
 
     //default font size values
-    final fontSizes = fontSizeValues ??
-        {
-          'Default': 0,
-          '10': 10,
-          '12': 12,
-          '14': 14,
-          '16': 16,
-          '18': 18,
-          '20': 20,
-          '24': 24,
-          '28': 28,
-          '32': 32,
-          '48': 48
-        };
+    final fontSizes =
+        fontSizeValues ?? {'Small': 'small', 'Large': 'large', 'Huge': 'huge'};
 
     return QuillToolbar(
       key: key,
@@ -202,24 +191,20 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
             attribute: Attribute.size,
             controller: controller,
             items: [
-              for (MapEntry<String, int> fontSize in fontSizes.entries)
-                PopupMenuItem<int>(
+              for (MapEntry<String, String> fontSize in fontSizes.entries)
+                PopupMenuItem<String>(
                   key: ValueKey(fontSize.key),
                   value: fontSize.value,
                   child: Text(fontSize.key.toString()),
                 ),
             ],
             onSelected: (newSize) {
-              if ((newSize != null) && (newSize as int > 0)) {
-                controller
-                    .formatSelection(Attribute.fromKeyValue('size', newSize));
-              }
-              if (newSize as int == 0) {
-                controller
-                    .formatSelection(Attribute.fromKeyValue('size', null));
+              if (newSize != null) {
+                controller.formatSelection(
+                    Attribute.fromKeyValue('size', getFontSize(newSize)));
               }
             },
-            rawitemsmap: fontSizes,
+            rawItemsMap: fontSizes,
             initialValue: (initialFontSizeValue != null) &&
                     (initialFontSizeValue <= fontSizes.length - 1)
                 ? initialFontSizeValue
diff --git a/lib/src/widgets/toolbar/quill_dropdown_button.dart b/lib/src/widgets/toolbar/quill_dropdown_button.dart
index 0b4671b0..3c480396 100644
--- a/lib/src/widgets/toolbar/quill_dropdown_button.dart
+++ b/lib/src/widgets/toolbar/quill_dropdown_button.dart
@@ -9,7 +9,7 @@ class QuillDropdownButton<T> extends StatefulWidget {
   const QuillDropdownButton({
     required this.initialValue,
     required this.items,
-    required this.rawitemsmap,
+    required this.rawItemsMap,
     required this.attribute,
     required this.controller,
     required this.onSelected,
@@ -27,7 +27,7 @@ class QuillDropdownButton<T> extends StatefulWidget {
   final double highlightElevation;
   final T initialValue;
   final List<PopupMenuEntry<T>> items;
-  final Map<String, int> rawitemsmap;
+  final Map<String, String> rawItemsMap;
   final ValueChanged<T> onSelected;
   final QuillIconTheme? iconTheme;
   final Attribute attribute;
@@ -47,7 +47,7 @@ class _QuillDropdownButtonState<T> extends State<QuillDropdownButton<T>> {
     super.initState();
     widget.controller.addListener(_didChangeEditingValue);
     _currentValue =
-        widget.rawitemsmap.keys.elementAt(widget.initialValue as int);
+        widget.rawItemsMap.keys.elementAt(widget.initialValue as int);
   }
 
   @override
@@ -75,17 +75,17 @@ class _QuillDropdownButtonState<T> extends State<QuillDropdownButton<T>> {
       final attribute = attrs[widget.attribute.key];
 
       if (attribute == null) {
-        return widget.rawitemsmap.keys
+        return widget.rawItemsMap.keys
             .elementAt(widget.initialValue as int)
             .toString();
       } else {
-        return widget.rawitemsmap.entries
+        return widget.rawItemsMap.entries
             .firstWhere((element) => element.value == attribute.value,
-                orElse: () => widget.rawitemsmap.entries.first)
+                orElse: () => widget.rawItemsMap.entries.first)
             .key;
       }
     }
-    return widget.rawitemsmap.keys
+    return widget.rawItemsMap.keys
         .elementAt(widget.initialValue as int)
         .toString();
   }
@@ -126,7 +126,8 @@ class _QuillDropdownButtonState<T> extends State<QuillDropdownButton<T>> {
       context: context,
       elevation: 4,
       // widget.elevation ?? popupMenuTheme.elevation,
-      initialValue: widget.initialValue,
+      initialValue:
+          widget.rawItemsMap.values.elementAt(widget.initialValue as int) as T,
       items: widget.items,
       position: position,
       shape: popupMenuTheme.shape,
@@ -140,9 +141,9 @@ class _QuillDropdownButtonState<T> extends State<QuillDropdownButton<T>> {
         return null;
       }
       setState(() {
-        _currentValue = widget.rawitemsmap.entries
+        _currentValue = widget.rawItemsMap.entries
             .firstWhere((element) => element.value == newValue,
-                orElse: () => widget.rawitemsmap.entries.first)
+                orElse: () => widget.rawItemsMap.entries.first)
             .key;
         widget.onSelected(newValue);
       });