diff --git a/MainWindow.cs b/MainWindow.cs
index c6274ff..2f541a6 100644
--- a/MainWindow.cs
+++ b/MainWindow.cs
@@ -21,7 +21,7 @@ namespace QuickClaude
         readonly TextBlock status = new TextBlock();
         readonly TextBlock grip = new TextBlock();
         WF.NotifyIcon tray;
-        WF.ToolStripMenuItem fontMenu, topItem, blackItem, whiteItem, lookItem, editItem, autoItem, folderItem;
+        WF.ToolStripMenuItem fontMenu, sizeMenu, topItem, blackItem, whiteItem, lookItem, editItem, autoItem, folderItem;
         bool lastWasTool;
         bool quitting;
 
@@ -30,14 +30,17 @@ namespace QuickClaude
         // The current font (picked from the tray's Font menu). Still called Mono since
         // ConfirmWindow and DarkMenu read it when they open.
         internal static FontFamily Mono = new FontFamily("Consolas, Courier New");
-        // Matches wIRC at its smallest font slider setting (10sp = 10 WPF units)
-        internal const double TextSize = 10;
+        // Picked from the tray's Font size menu, 10 to 18 (same units as wIRC's font size
+        // slider: 10sp = 10 WPF units). ConfirmWindow and DarkMenu read it when they open.
+        internal const double MinTextSize = 10, MaxTextSize = 18;
+        internal static double TextSize = 10;
         const double ResizeEdge = 6;
 
         public MainWindow()
         {
             settings = Settings.Load();
             Mono = Fonts.Find(settings.Font).Family;
+            TextSize = Math.Clamp(Math.Round(settings.FontSize), MinTextSize, MaxTextSize);
 
             Title = "QuickClaude";
             WindowStyle = WindowStyle.None;
@@ -147,6 +150,24 @@ namespace QuickClaude
             ((Grid)Content).ContextMenu = DarkMenu.Make(null, NewConversation);
         }
 
+        void SetFontSize(double size)
+        {
+            size = Math.Clamp(size, MinTextSize, MaxTextSize);
+            settings.FontSize = size;
+            settings.Save();
+            TextSize = size;
+            FontSize = size;
+            transcript.FontSize = size;
+            input.FontSize = size;
+            status.FontSize = size;
+            grip.FontSize = size;
+            BuildContextMenus();
+            transcript.ScrollToEnd();
+            if (sizeMenu != null)
+                foreach (WF.ToolStripMenuItem item in sizeMenu.DropDownItems)
+                    item.Checked = item.Text == size.ToString();
+        }
+
         void SetFont(string name)
         {
             var choice = Fonts.Find(name);
@@ -388,6 +409,14 @@ namespace QuickClaude
             }
             menu.Items.Add(fontMenu);
 
+            sizeMenu = new WF.ToolStripMenuItem("Font size");
+            for (int px = (int)MinTextSize; px <= (int)MaxTextSize; px++)
+            {
+                double sz = px;
+                sizeMenu.DropDownItems.Add(new WF.ToolStripMenuItem(px.ToString(), null, (s, e) => SetFontSize(sz)) { Checked = sz == TextSize });
+            }
+            menu.Items.Add(sizeMenu);
+
             topItem = new WF.ToolStripMenuItem("Always on top", null, (s, e) =>
             {
                 settings.Topmost = !settings.Topmost; Topmost = settings.Topmost; topItem.Checked = settings.Topmost; settings.Save();
diff --git a/QuickClaude.csproj b/QuickClaude.csproj
index e2e70f1..c41564c 100644
--- a/QuickClaude.csproj
+++ b/QuickClaude.csproj
@@ -10,7 +10,7 @@
     <Nullable>disable</Nullable>
     <AssemblyName>QuickClaude</AssemblyName>
     <RootNamespace>QuickClaude</RootNamespace>
-    <Version>1.1.0</Version>
+    <Version>1.2.0</Version>
     <Product>QuickClaude</Product>
     <ApplicationIcon>app.ico</ApplicationIcon>
     <RuntimeIdentifier>win-x64</RuntimeIdentifier>
diff --git a/Settings.cs b/Settings.cs
index 658dfb0..a1893a0 100644
--- a/Settings.cs
+++ b/Settings.cs
@@ -12,6 +12,7 @@ namespace QuickClaude
         public double Height { get; set; } = 380;
         public string TextColor { get; set; } = "Black";
         public string Font { get; set; } = "Consolas";
+        public double FontSize { get; set; } = 10;
         public bool Topmost { get; set; } = false;
         public string WorkDir { get; set; } = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
         public string Mode { get; set; } = "default";