diff --git a/.changes/window-state-optional-flags.md b/.changes/window-state-optional-flags.md
new file mode 100644
index 00000000..76c6465a
--- /dev/null
+++ b/.changes/window-state-optional-flags.md
@@ -0,0 +1,6 @@
+---
+'window-state': 'minor'
+'window-state-js': 'minor'
+---
+
+Making `flags` optional in the `saveWindowState`, `restoreState`, `restoreStateCurrent` JavaScripts APIs, leaving it empty will make it use plugin's default flags
diff --git a/plugins/window-state/guest-js/index.ts b/plugins/window-state/guest-js/index.ts
index f922f3f0..1cbd5733 100644
--- a/plugins/window-state/guest-js/index.ts
+++ b/plugins/window-state/guest-js/index.ts
@@ -18,7 +18,7 @@ export enum StateFlags {
 /**
  *  Save the state of all open windows to disk.
  */
-async function saveWindowState(flags: StateFlags): Promise<void> {
+async function saveWindowState(flags?: StateFlags): Promise<void> {
   await invoke('plugin:window-state|save_window_state', { flags })
 }
 
@@ -27,7 +27,7 @@ async function saveWindowState(flags: StateFlags): Promise<void> {
  */
 async function restoreState(
   label: WindowLabel,
-  flags: StateFlags
+  flags?: StateFlags
 ): Promise<void> {
   await invoke('plugin:window-state|restore_state', { label, flags })
 }
@@ -35,7 +35,7 @@ async function restoreState(
 /**
  *  Restore the state for the current window from disk.
  */
-async function restoreStateCurrent(flags: StateFlags): Promise<void> {
+async function restoreStateCurrent(flags?: StateFlags): Promise<void> {
   await restoreState(getCurrentWindow().label, flags)
 }
 /**
diff --git a/plugins/window-state/src/cmd.rs b/plugins/window-state/src/cmd.rs
index 99d41a82..8b376aa9 100644
--- a/plugins/window-state/src/cmd.rs
+++ b/plugins/window-state/src/cmd.rs
@@ -5,13 +5,25 @@
 use crate::{AppHandleExt, StateFlags, WindowExt};
 use tauri::{command, AppHandle, Manager, Runtime};
 
+fn get_state_flags<R: Runtime>(
+    app: &AppHandle<R>,
+    flags: Option<u32>,
+) -> std::result::Result<StateFlags, String> {
+    let flags = if let Some(flags) = flags {
+        StateFlags::from_bits(flags).ok_or_else(|| format!("Invalid state flags bits: {flags}"))?
+    } else {
+        let plugin_state = app.state::<crate::PluginState>();
+        plugin_state.state_flags
+    };
+    Ok(flags)
+}
+
 #[command]
 pub async fn save_window_state<R: Runtime>(
     app: AppHandle<R>,
-    flags: u32,
+    flags: Option<u32>,
 ) -> std::result::Result<(), String> {
-    let flags = StateFlags::from_bits(flags)
-        .ok_or_else(|| format!("Invalid state flags bits: {}", flags))?;
+    let flags = get_state_flags(&app, flags)?;
     app.save_window_state(flags).map_err(|e| e.to_string())?;
     Ok(())
 }
@@ -20,12 +32,11 @@ pub async fn save_window_state<R: Runtime>(
 pub async fn restore_state<R: Runtime>(
     app: AppHandle<R>,
     label: String,
-    flags: u32,
+    flags: Option<u32>,
 ) -> std::result::Result<(), String> {
-    let flags = StateFlags::from_bits(flags)
-        .ok_or_else(|| format!("Invalid state flags bits: {}", flags))?;
+    let flags = get_state_flags(&app, flags)?;
     app.get_webview_window(&label)
-        .ok_or_else(|| format!("Couldn't find window with label: {}", label))?
+        .ok_or_else(|| format!("Couldn't find window with label: {label}"))?
         .restore_state(flags)
         .map_err(|e| e.to_string())?;
     Ok(())
diff --git a/plugins/window-state/src/lib.rs b/plugins/window-state/src/lib.rs
index 50345b64..42c0fdf6 100644
--- a/plugins/window-state/src/lib.rs
+++ b/plugins/window-state/src/lib.rs
@@ -60,12 +60,14 @@ bitflags! {
 }
 
 impl Default for StateFlags {
+    /// Default to [`all`](Self::all)
     fn default() -> Self {
         Self::all()
     }
 }
 
 struct PluginState {
+    pub(crate) state_flags: StateFlags,
     filename: String,
     map_label: Option<Box<LabelMapperFn>>,
 }
@@ -381,7 +383,7 @@ impl Builder {
     }
 
     pub fn build<R: Runtime>(self) -> TauriPlugin<R> {
-        let flags = self.state_flags;
+        let state_flags = self.state_flags;
         let filename = self.filename.unwrap_or_else(|| DEFAULT_FILENAME.into());
         let map_label = self.map_label;
 
@@ -391,11 +393,12 @@ impl Builder {
                 cmd::restore_state,
                 cmd::filename
             ])
-            .setup(|app, _api| {
+            .setup(move |app, _api| {
                 let cache = load_saved_window_states(app, &filename).unwrap_or_default();
                 app.manage(WindowStateCache(Arc::new(Mutex::new(cache))));
                 app.manage(RestoringWindowState(Mutex::new(())));
                 app.manage(PluginState {
+                    state_flags,
                     filename,
                     map_label,
                 });
@@ -423,14 +426,13 @@ impl Builder {
                 }
 
                 if !self.skip_initial_state.contains(label) {
-                    let _ = window.restore_state(self.state_flags);
+                    let _ = window.restore_state(state_flags);
                 }
 
                 let cache = window.state::<WindowStateCache>();
                 let cache = cache.0.clone();
                 let label = label.to_string();
                 let window_clone = window.clone();
-                let flags = self.state_flags;
 
                 // insert a default state if this window should be tracked and
                 // the disk cache doesn't have a state for it
@@ -446,11 +448,11 @@ impl Builder {
                     WindowEvent::CloseRequested { .. } => {
                         let mut c = cache.lock().unwrap();
                         if let Some(state) = c.get_mut(&label) {
-                            let _ = window_clone.update_state(state, flags);
+                            let _ = window_clone.update_state(state, state_flags);
                         }
                     }
 
-                    WindowEvent::Moved(position) if flags.contains(StateFlags::POSITION) => {
+                    WindowEvent::Moved(position) if state_flags.contains(StateFlags::POSITION) => {
                         if window_clone
                             .state::<RestoringWindowState>()
                             .0
@@ -468,7 +470,7 @@ impl Builder {
                             }
                         }
                     }
-                    WindowEvent::Resized(size) if flags.contains(StateFlags::SIZE) => {
+                    WindowEvent::Resized(size) if state_flags.contains(StateFlags::SIZE) => {
                         if window_clone
                             .state::<RestoringWindowState>()
                             .0
@@ -499,7 +501,7 @@ impl Builder {
             })
             .on_event(move |app, event| {
                 if let RunEvent::Exit = event {
-                    let _ = app.save_window_state(flags);
+                    let _ = app.save_window_state(state_flags);
                 }
             })
             .build()