diff --git a/.changes/fix-ico-largest-entry.md b/.changes/fix-ico-largest-entry.md
new file mode 100644
index 000000000000..eceebc37741a
--- /dev/null
+++ b/.changes/fix-ico-largest-entry.md
@@ -0,0 +1,6 @@
+---
+"tauri-codegen": patch:bug
+"tauri-runtime-wry": patch:bug
+---
+
+On Windows, set `ICON_BIG` from the exe-embedded ICO resource via `IconExtWindows::from_resource` for crisp taskbar and alt-tab icons. Cap the codegen ICO entry at 32x32 for `ICON_SMALL` to reduce binary size.
diff --git a/crates/tauri-codegen/src/image.rs b/crates/tauri-codegen/src/image.rs
index 49546082a9b7..e9c7384104f4 100644
--- a/crates/tauri-codegen/src/image.rs
+++ b/crates/tauri-codegen/src/image.rs
@@ -54,7 +54,11 @@ impl CachedIcon {
     let icon_dir = ico::IconDir::read(Cursor::new(&buf))
       .unwrap_or_else(|e| panic!("failed to parse icon {}: {}", icon.display(), e));
 
-    let entry = &icon_dir.entries()[0];
+    let entry = icon_dir
+      .entries()
+      .iter()
+      .min_by_key(|e| e.width().abs_diff(32))
+      .unwrap();
     let rgba = entry
       .decode()
       .unwrap_or_else(|e| panic!("failed to decode icon {}: {}", icon.display(), e))
diff --git a/crates/tauri-runtime-wry/src/lib.rs b/crates/tauri-runtime-wry/src/lib.rs
index 6c537de6cf43..b6cb3baadb6a 100644
--- a/crates/tauri-runtime-wry/src/lib.rs
+++ b/crates/tauri-runtime-wry/src/lib.rs
@@ -48,7 +48,7 @@ use tao::platform::macos::{EventLoopWindowTargetExtMacOS, WindowBuilderExtMacOS}
 ))]
 use tao::platform::unix::{WindowBuilderExtUnix, WindowExtUnix};
 #[cfg(windows)]
-use tao::platform::windows::{WindowBuilderExtWindows, WindowExtWindows};
+use tao::platform::windows::{IconExtWindows, WindowBuilderExtWindows, WindowExtWindows};
 #[cfg(windows)]
 use webview2_com::{ContainsFullScreenElementChangedEventHandler, FocusChangedEventHandler};
 #[cfg(windows)]
@@ -1222,6 +1222,14 @@ impl WindowBuilder for WindowBuilderWrapper {
     self.inner = self
       .inner
       .with_window_icon(Some(TaoIcon::try_from(icon)?.0));
+
+    #[cfg(windows)]
+    {
+      if let Ok(resource_icon) = TaoWindowIcon::from_resource(32512, None) {
+        self.inner = self.inner.with_taskbar_icon(Some(resource_icon));
+      }
+    }
+
     Ok(self)
   }