diff --git a/src/Resources/Locales/en_US.axaml b/src/Resources/Locales/en_US.axaml
index 8e905d6e..166ad3ab 100644
--- a/src/Resources/Locales/en_US.axaml
+++ b/src/Resources/Locales/en_US.axaml
@@ -435,6 +435,7 @@
   <x:String x:Key="Text.Preference.Appearance" xml:space="preserve">APPEARANCE</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFont" xml:space="preserve">Default Font</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFontSize" xml:space="preserve">Default Font Size</x:String>
+  <x:String x:Key="Text.Preference.Appearance.EditorFontSize" xml:space="preserve">Editor Font Size</x:String>
   <x:String x:Key="Text.Preference.Appearance.MonospaceFont" xml:space="preserve">Monospace Font</x:String>
   <x:String x:Key="Text.Preference.Appearance.OnlyUseMonoFontInEditor" xml:space="preserve">Only use monospace font in text editor</x:String>
   <x:String x:Key="Text.Preference.Appearance.Theme" xml:space="preserve">Theme</x:String>
diff --git a/src/Resources/Locales/zh_CN.axaml b/src/Resources/Locales/zh_CN.axaml
index 4ecb5734..5632a3ef 100644
--- a/src/Resources/Locales/zh_CN.axaml
+++ b/src/Resources/Locales/zh_CN.axaml
@@ -438,6 +438,7 @@
   <x:String x:Key="Text.Preference.Appearance" xml:space="preserve">外观配置</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFont" xml:space="preserve">缺省字体</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFontSize" xml:space="preserve">默认字体大小</x:String>
+  <x:String x:Key="Text.Preference.Appearance.EditorFontSize" xml:space="preserve">代码字体大小</x:String>
   <x:String x:Key="Text.Preference.Appearance.MonospaceFont" xml:space="preserve">等宽字体</x:String>
   <x:String x:Key="Text.Preference.Appearance.OnlyUseMonoFontInEditor" xml:space="preserve">仅在文本编辑器中使用等宽字体</x:String>
   <x:String x:Key="Text.Preference.Appearance.Theme" xml:space="preserve">主题</x:String>
diff --git a/src/Resources/Locales/zh_TW.axaml b/src/Resources/Locales/zh_TW.axaml
index 8d9f0325..229a5fdb 100644
--- a/src/Resources/Locales/zh_TW.axaml
+++ b/src/Resources/Locales/zh_TW.axaml
@@ -438,6 +438,7 @@
   <x:String x:Key="Text.Preference.Appearance" xml:space="preserve">外觀設定</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFont" xml:space="preserve">預設字型</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFontSize" xml:space="preserve">預設字型大小</x:String>
+  <x:String x:Key="Text.Preference.Appearance.EditorFontSize" xml:space="preserve">程式碼字型大小</x:String>
   <x:String x:Key="Text.Preference.Appearance.MonospaceFont" xml:space="preserve">等寬字型</x:String>
   <x:String x:Key="Text.Preference.Appearance.OnlyUseMonoFontInEditor" xml:space="preserve">僅在文字編輯器中使用等寬字型</x:String>
   <x:String x:Key="Text.Preference.Appearance.Theme" xml:space="preserve">佈景主題</x:String>
diff --git a/src/ViewModels/Preference.cs b/src/ViewModels/Preference.cs
index efd31b72..68065df1 100644
--- a/src/ViewModels/Preference.cs
+++ b/src/ViewModels/Preference.cs
@@ -102,6 +102,12 @@ namespace SourceGit.ViewModels
             set => SetProperty(ref _defaultFontSize, value);
         }
 
+        public double EditorFontSize
+        {
+            get => _editorFontSize;
+            set => SetProperty(ref _editorFontSize, value);
+        }
+
         public LayoutInfo Layout
         {
             get => _layout;
@@ -579,6 +585,7 @@ namespace SourceGit.ViewModels
         private bool _onlyUseMonoFontInEditor = false;
         private bool _useSystemWindowFrame = false;
         private double _defaultFontSize = 13;
+        private double _editorFontSize = 13;
         private LayoutInfo _layout = new LayoutInfo();
 
         private int _maxHistoryCommits = 20000;
diff --git a/src/Views/Blame.axaml b/src/Views/Blame.axaml
index 98e1c4f2..9d3afd77 100644
--- a/src/Views/Blame.axaml
+++ b/src/Views/Blame.axaml
@@ -57,6 +57,7 @@
                          Background="Transparent"
                          Foreground="{DynamicResource Brush.FG1}"
                          FontFamily="{DynamicResource Fonts.Monospace}"
+                         FontSize="{Binding Source={x:Static vm:Preference.Instance}, Path=EditorFontSize}"
                          BlameData="{Binding Data}"/>
       
       <!-- Not supported mask (for binary files) -->
diff --git a/src/Views/Preference.axaml b/src/Views/Preference.axaml
index 9cf47f9c..73be0f7c 100644
--- a/src/Views/Preference.axaml
+++ b/src/Views/Preference.axaml
@@ -121,7 +121,7 @@
           <TabItem.Header>
             <TextBlock Classes="tab_header" Text="{DynamicResource Text.Preference.Appearance}"/>
           </TabItem.Header>
-          <Grid Margin="8" RowDefinitions="32,32,32,32,32,32,32,Auto" ColumnDefinitions="Auto,*">
+          <Grid Margin="8" RowDefinitions="32,32,32,32,32,32,32,32,Auto" ColumnDefinitions="Auto,*">
             <TextBlock Grid.Row="0" Grid.Column="0"
                        Text="{DynamicResource Text.Preference.Appearance.Theme}"
                        HorizontalAlignment="Right"
@@ -170,10 +170,22 @@
                            Value="{Binding DefaultFontSize, Mode=TwoWay}"/>
 
             <TextBlock Grid.Row="4" Grid.Column="0"
+                       Text="{DynamicResource Text.Preference.Appearance.EditorFontSize}"
+                       HorizontalAlignment="Right"
+                       Margin="0,0,16,0"/>
+            <NumericUpDown Grid.Row="4" Grid.Column="1"
+                           Minimum="10" Maximum="18" Increment="0.5"
+                           Height="28"
+                           Padding="4"
+                           BorderThickness="1" BorderBrush="{DynamicResource Brush.Border1}"
+                           CornerRadius="3"
+                           Value="{Binding EditorFontSize, Mode=TwoWay}"/>
+
+            <TextBlock Grid.Row="5" Grid.Column="0"
                        Text="{DynamicResource Text.Preference.Appearance.ThemeOverrides}"
                        HorizontalAlignment="Right"
                        Margin="0,0,16,0"/>
-            <TextBox Grid.Row="4" Grid.Column="1"
+            <TextBox Grid.Row="5" Grid.Column="1"
                      Height="28"
                      CornerRadius="3"
                      Text="{Binding ThemeOverrides, Mode=TwoWay}">
@@ -184,16 +196,16 @@
               </TextBox.InnerRightContent>
             </TextBox>
 
-            <CheckBox Grid.Row="5" Grid.Column="1"
+            <CheckBox Grid.Row="6" Grid.Column="1"
                       Content="{DynamicResource Text.Preference.Appearance.OnlyUseMonoFontInEditor}"
                       IsChecked="{Binding OnlyUseMonoFontInEditor, Mode=TwoWay}"/>
 
-            <CheckBox Grid.Row="6" Grid.Column="1"
+            <CheckBox Grid.Row="7" Grid.Column="1"
                       Height="32"
                       Content="{DynamicResource Text.Preference.Appearance.UseFixedTabWidth}"
                       IsChecked="{Binding Source={x:Static vm:Preference.Instance}, Path=UseFixedTabWidth, Mode=TwoWay}"/>
 
-            <CheckBox Grid.Row="7" Grid.Column="1"
+            <CheckBox Grid.Row="8" Grid.Column="1"
                       Height="32"
                       Content="{DynamicResource Text.Preference.Appearance.UseNativeWindowFrame}"
                       IsChecked="{Binding Source={x:Static vm:Preference.Instance}, Path=UseSystemWindowFrame, Mode=OneTime}"
diff --git a/src/Views/RevisionFileContentViewer.axaml b/src/Views/RevisionFileContentViewer.axaml
index 2084a8b2..5c2501e9 100644
--- a/src/Views/RevisionFileContentViewer.axaml
+++ b/src/Views/RevisionFileContentViewer.axaml
@@ -4,6 +4,7 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:m="using:SourceGit.Models"
              xmlns:v="using:SourceGit.Views"
+             xmlns:vm="using:SourceGit.ViewModels"
              mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
              x:Class="SourceGit.Views.RevisionFileContentViewer">
   <UserControl.DataTemplates>
@@ -19,7 +20,9 @@
     </DataTemplate>
 
     <DataTemplate DataType="m:RevisionTextFile">
-      <v:RevisionTextFileView FontFamily="{DynamicResource Fonts.Monospace}" Background="{DynamicResource Brush.Contents}"/>
+      <v:RevisionTextFileView FontFamily="{DynamicResource Fonts.Monospace}"
+                              FontSize="{Binding Source={x:Static vm:Preference.Instance}, Path=EditorFontSize}"
+                              Background="{DynamicResource Brush.Contents}"/>
     </DataTemplate>
 
     <DataTemplate DataType="m:RevisionImageFile">
diff --git a/src/Views/TextDiffView.axaml b/src/Views/TextDiffView.axaml
index 4ba8628e..57427321 100644
--- a/src/Views/TextDiffView.axaml
+++ b/src/Views/TextDiffView.axaml
@@ -23,6 +23,7 @@
                                        DeletedHighlightBrush="{DynamicResource Brush.Diff.DeletedHighlight}"
                                        IndicatorForeground="{DynamicResource Brush.FG2}"
                                        FontFamily="{DynamicResource Fonts.Monospace}"
+                                       FontSize="{Binding Source={x:Static vm:Preference.Instance}, Path=EditorFontSize}"
                                        UseSyntaxHighlighting="{Binding Source={x:Static vm:Preference.Instance}, Path=UseSyntaxHighlighting}"
                                        WordWrap="{Binding Source={x:Static vm:Preference.Instance}, Path=EnableDiffViewWordWrap}"
                                        ShowHiddenSymbols="{Binding Source={x:Static vm:Preference.Instance}, Path=ShowHiddenSymbolsInDiffView}"
@@ -44,6 +45,7 @@
                                            DeletedHighlightBrush="{DynamicResource Brush.Diff.DeletedHighlight}"
                                            IndicatorForeground="{DynamicResource Brush.FG2}"
                                            FontFamily="{DynamicResource Fonts.Monospace}"
+                                           FontSize="{Binding Source={x:Static vm:Preference.Instance}, Path=EditorFontSize}"
                                            UseSyntaxHighlighting="{Binding Source={x:Static vm:Preference.Instance}, Path=UseSyntaxHighlighting}"
                                            WordWrap="False"
                                            ShowHiddenSymbols="{Binding Source={x:Static vm:Preference.Instance}, Path=ShowHiddenSymbolsInDiffView}"
@@ -64,6 +66,7 @@
                                            DeletedHighlightBrush="{DynamicResource Brush.Diff.DeletedHighlight}"
                                            IndicatorForeground="{DynamicResource Brush.FG2}"
                                            FontFamily="{DynamicResource Fonts.Monospace}"
+                                           FontSize="{Binding Source={x:Static vm:Preference.Instance}, Path=EditorFontSize}"
                                            UseSyntaxHighlighting="{Binding Source={x:Static vm:Preference.Instance}, Path=UseSyntaxHighlighting}"
                                            WordWrap="False"
                                            ShowHiddenSymbols="{Binding Source={x:Static vm:Preference.Instance}, Path=ShowHiddenSymbolsInDiffView}"