diff --git a/src/app/nebula_controller.cpp b/src/app/nebula_controller.cpp
index da7c373..33bfbe2 100644
--- a/src/app/nebula_controller.cpp
+++ b/src/app/nebula_controller.cpp
@@ -211,6 +211,12 @@ void NebulaController::OnBrowserClosing(nebula::cef::BrowserRole role, CefRefPtr
         menu_popup_browser_ = nullptr;
         menu_popup_client_ = nullptr;
     } else {
+        if (content_fullscreen_) {
+            const auto* active_tab = tabs_.ActiveTab();
+            if (active_tab && active_tab->browser && active_tab->browser->IsSame(browser)) {
+                SetContentFullscreen(false);
+            }
+        }
         tabs_.ClearBrowser(browser);
     }
     MaybeFinishShutdown();
@@ -308,6 +314,15 @@ void NebulaController::OnContentFaviconChanged(CefRefPtr<CefBrowser> browser, co
     tabs_.UpdateFavicon(browser, urls);
 }
 
+void NebulaController::OnContentFullscreenChanged(CefRefPtr<CefBrowser> browser, bool fullscreen) {
+    const auto* active_tab = tabs_.ActiveTab();
+    if (!active_tab || !active_tab->browser || !active_tab->browser->IsSame(browser)) {
+        return;
+    }
+
+    SetContentFullscreen(fullscreen);
+}
+
 void NebulaController::OnPopupRequested(CefRefPtr<CefBrowser> browser, const std::string& target_url) {
     if (!tabs_.OwnsBrowser(browser)) {
         return;
@@ -445,7 +460,7 @@ void NebulaController::CreateMenuPopupBrowser() {
 }
 
 void NebulaController::PositionMenuPopup() {
-    if (!window_ || !window_->hwnd() || !menu_popup_browser_) {
+    if (content_fullscreen_ || !window_ || !window_->hwnd() || !menu_popup_browser_) {
         return;
     }
 
@@ -493,19 +508,38 @@ void NebulaController::FreshReload() {
     tabs_.LoadURL(WithCacheBuster(tab->url));
 }
 
+void NebulaController::SetContentFullscreen(bool fullscreen) {
+    if (content_fullscreen_ == fullscreen) {
+        return;
+    }
+
+    content_fullscreen_ = fullscreen;
+    if (fullscreen) {
+        CloseMenuPopup();
+    }
+
+    SetBrowserVisible(chrome_browser_, !fullscreen);
+    if (window_) {
+        window_->SetFullscreen(fullscreen);
+    }
+    ResizeBrowsers();
+}
+
 void NebulaController::ResizeBrowsers() {
     if (!window_) {
         return;
     }
 
-    const auto layout = window_->CurrentLayout();
+    const auto layout = window_->CurrentLayout(!content_fullscreen_);
     if (chrome_browser_) {
         window_->ResizeChild(chrome_browser_->GetHost()->GetWindowHandle(), layout.chrome);
     }
     if (const auto* tab = tabs_.ActiveTab(); tab && tab->browser) {
         window_->ResizeChild(tab->browser->GetHost()->GetWindowHandle(), layout.content);
     }
-    PositionMenuPopup();
+    if (!content_fullscreen_) {
+        PositionMenuPopup();
+    }
 }
 
 void NebulaController::SendChromeState(const nebula::browser::NebulaTab& tab) {
diff --git a/src/app/nebula_controller.h b/src/app/nebula_controller.h
index 05d14ab..6a37737 100644
--- a/src/app/nebula_controller.h
+++ b/src/app/nebula_controller.h
@@ -34,6 +34,7 @@ public:
     void OnContentLoadingStateChanged(CefRefPtr<CefBrowser> browser, bool is_loading) override;
     void OnContentLoadProgressChanged(CefRefPtr<CefBrowser> browser, double progress) override;
     void OnContentFaviconChanged(CefRefPtr<CefBrowser> browser, const std::vector<std::string>& urls) override;
+    void OnContentFullscreenChanged(CefRefPtr<CefBrowser> browser, bool fullscreen) override;
     void OnPopupRequested(CefRefPtr<CefBrowser> browser, const std::string& target_url) override;
     bool ShouldBypassInsecureWarning(CefRefPtr<CefBrowser> browser, const std::string& target_url) override;
 
@@ -50,6 +51,7 @@ private:
     void ToggleDevTools();
     void AdjustZoom(double delta);
     void FreshReload();
+    void SetContentFullscreen(bool fullscreen);
     void ResizeBrowsers();
     void SendChromeState(const nebula::browser::NebulaTab& tab);
     void MaybeFinishShutdown();
@@ -59,6 +61,7 @@ private:
     int show_command_ = SW_SHOWDEFAULT;
     bool closing_ = false;
     bool chrome_ready_ = false;
+    bool content_fullscreen_ = false;
 
     std::unique_ptr<nebula::window::NebulaWindow> window_;
     nebula::browser::TabManager tabs_;
diff --git a/src/cef/browser_client.cpp b/src/cef/browser_client.cpp
index f1453b8..b3360dd 100644
--- a/src/cef/browser_client.cpp
+++ b/src/cef/browser_client.cpp
@@ -89,6 +89,13 @@ void NebulaBrowserClient::OnFaviconURLChange(CefRefPtr<CefBrowser> browser,
     }
 }
 
+void NebulaBrowserClient::OnFullscreenModeChange(CefRefPtr<CefBrowser> browser, bool fullscreen) {
+    CEF_REQUIRE_UI_THREAD();
+    if (role_ == BrowserRole::Content && delegate_) {
+        delegate_->OnContentFullscreenChanged(browser, fullscreen);
+    }
+}
+
 bool NebulaBrowserClient::OnPreKeyEvent(CefRefPtr<CefBrowser> browser,
                                         const CefKeyEvent& event,
                                         CefEventHandle os_event,
diff --git a/src/cef/browser_client.h b/src/cef/browser_client.h
index 6347433..e401cd0 100644
--- a/src/cef/browser_client.h
+++ b/src/cef/browser_client.h
@@ -30,6 +30,7 @@ public:
     virtual void OnContentLoadingStateChanged(CefRefPtr<CefBrowser> browser, bool is_loading) = 0;
     virtual void OnContentLoadProgressChanged(CefRefPtr<CefBrowser> browser, double progress) = 0;
     virtual void OnContentFaviconChanged(CefRefPtr<CefBrowser> browser, const std::vector<std::string>& urls) = 0;
+    virtual void OnContentFullscreenChanged(CefRefPtr<CefBrowser> browser, bool fullscreen) = 0;
     virtual void OnPopupRequested(CefRefPtr<CefBrowser> browser, const std::string& target_url) = 0;
     virtual bool ShouldBypassInsecureWarning(CefRefPtr<CefBrowser> browser, const std::string& target_url) = 0;
 };
@@ -63,6 +64,7 @@ public:
                        const CefString& title) override;
     void OnFaviconURLChange(CefRefPtr<CefBrowser> browser,
                             const std::vector<CefString>& icon_urls) override;
+    void OnFullscreenModeChange(CefRefPtr<CefBrowser> browser, bool fullscreen) override;
 
     bool OnPreKeyEvent(CefRefPtr<CefBrowser> browser,
                        const CefKeyEvent& event,
diff --git a/src/window/nebula_window.cpp b/src/window/nebula_window.cpp
index 8384bc0..f08c623 100644
--- a/src/window/nebula_window.cpp
+++ b/src/window/nebula_window.cpp
@@ -23,6 +23,30 @@ RECT GetWorkArea() {
     return work_area;
 }
 
+RECT GetMonitorWorkArea(HWND hwnd) {
+    MONITORINFO monitor_info = {};
+    monitor_info.cbSize = sizeof(monitor_info);
+
+    const HMONITOR monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
+    if (monitor && GetMonitorInfoW(monitor, &monitor_info)) {
+        return monitor_info.rcWork;
+    }
+
+    return GetWorkArea();
+}
+
+RECT GetMonitorArea(HWND hwnd) {
+    MONITORINFO monitor_info = {};
+    monitor_info.cbSize = sizeof(monitor_info);
+
+    const HMONITOR monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
+    if (monitor && GetMonitorInfoW(monitor, &monitor_info)) {
+        return monitor_info.rcMonitor;
+    }
+
+    return GetWorkArea();
+}
+
 bool IsResizeHit(LRESULT hit) {
     return hit == HTLEFT || hit == HTRIGHT || hit == HTTOP || hit == HTBOTTOM ||
            hit == HTTOPLEFT || hit == HTTOPRIGHT || hit == HTBOTTOMLEFT || hit == HTBOTTOMRIGHT;
@@ -125,14 +149,16 @@ bool NebulaWindow::Create(HINSTANCE instance, int show_command) {
     return true;
 }
 
-BrowserLayout NebulaWindow::CurrentLayout() const {
+BrowserLayout NebulaWindow::CurrentLayout(bool show_chrome) const {
     RECT client = {};
     if (hwnd_) {
         GetClientRect(hwnd_, &client);
     }
 
     BrowserLayout layout;
-    layout.chrome = {0, 0, client.right, std::min<LONG>(ScaleForDpi(chrome_height_dip_), client.bottom)};
+    layout.chrome = show_chrome
+        ? RECT{0, 0, client.right, std::min<LONG>(ScaleForDpi(chrome_height_dip_), client.bottom)}
+        : RECT{0, 0, 0, 0};
     layout.content = {0, layout.chrome.bottom, client.right, client.bottom};
     return layout;
 }
@@ -160,13 +186,55 @@ void NebulaWindow::Minimize() {
 }
 
 void NebulaWindow::ToggleMaximize() {
-    if (!hwnd_) {
+    if (!hwnd_ || fullscreen_) {
         return;
     }
 
     ShowWindow(hwnd_, IsZoomed(hwnd_) ? SW_RESTORE : SW_MAXIMIZE);
 }
 
+void NebulaWindow::SetFullscreen(bool fullscreen) {
+    if (!hwnd_ || fullscreen_ == fullscreen) {
+        return;
+    }
+
+    if (fullscreen) {
+        restore_style_ = GetWindowLongPtrW(hwnd_, GWL_STYLE);
+        restore_ex_style_ = GetWindowLongPtrW(hwnd_, GWL_EXSTYLE);
+        restore_placement_.length = sizeof(restore_placement_);
+        GetWindowPlacement(hwnd_, &restore_placement_);
+
+        fullscreen_ = true;
+        const RECT monitor = GetMonitorArea(hwnd_);
+        SetWindowLongPtrW(hwnd_, GWL_STYLE, restore_style_ & ~(WS_THICKFRAME | WS_MAXIMIZEBOX | WS_MINIMIZEBOX));
+        SetWindowLongPtrW(hwnd_, GWL_EXSTYLE, restore_ex_style_);
+        SetWindowPos(
+            hwnd_,
+            HWND_TOPMOST,
+            monitor.left,
+            monitor.top,
+            monitor.right - monitor.left,
+            monitor.bottom - monitor.top,
+            SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
+    } else {
+        fullscreen_ = false;
+        SetWindowLongPtrW(hwnd_, GWL_STYLE, restore_style_);
+        SetWindowLongPtrW(hwnd_, GWL_EXSTYLE, restore_ex_style_);
+        SetWindowPlacement(hwnd_, &restore_placement_);
+        SetWindowPos(
+            hwnd_,
+            HWND_NOTOPMOST,
+            0,
+            0,
+            0,
+            0,
+            SWP_NOMOVE | SWP_NOSIZE | SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
+        ApplyWindowFrameStyle(hwnd_);
+    }
+
+    NotifyResize();
+}
+
 void NebulaWindow::Close() {
     if (hwnd_) {
         SendMessageW(hwnd_, WM_CLOSE, 0, 0);
@@ -335,6 +403,18 @@ LRESULT NebulaWindow::WndProc(UINT message, WPARAM wparam, LPARAM lparam) {
             return 0;
         }
 
+        case WM_GETMINMAXINFO: {
+            const RECT work_area = GetMonitorWorkArea(hwnd_);
+            const RECT monitor_area = GetMonitorArea(hwnd_);
+
+            auto* minmax = reinterpret_cast<MINMAXINFO*>(lparam);
+            minmax->ptMaxPosition.x = work_area.left - monitor_area.left;
+            minmax->ptMaxPosition.y = work_area.top - monitor_area.top;
+            minmax->ptMaxSize.x = work_area.right - work_area.left;
+            minmax->ptMaxSize.y = work_area.bottom - work_area.top;
+            return 0;
+        }
+
         case WM_CLOSE:
             if (delegate_) {
                 delegate_->OnWindowCloseRequested();
@@ -409,6 +489,10 @@ LRESULT NebulaWindow::HitTestPoint(POINT point) const {
     RECT window = {};
     GetWindowRect(hwnd_, &window);
 
+    if (fullscreen_ || IsZoomed(hwnd_)) {
+        return HTCLIENT;
+    }
+
     const int resize_border = ScaleForDpi(resize_border_dip_);
     const bool left = point.x >= window.left && point.x < window.left + resize_border;
     const bool right = point.x < window.right && point.x >= window.right - resize_border;
diff --git a/src/window/nebula_window.h b/src/window/nebula_window.h
index 83bcb36..c971c62 100644
--- a/src/window/nebula_window.h
+++ b/src/window/nebula_window.h
@@ -26,11 +26,12 @@ public:
 
     bool Create(HINSTANCE instance, int show_command);
     HWND hwnd() const { return hwnd_; }
-    BrowserLayout CurrentLayout() const;
+    BrowserLayout CurrentLayout(bool show_chrome = true) const;
 
     void ResizeChild(HWND child, const RECT& rect) const;
     void Minimize();
     void ToggleMaximize();
+    void SetFullscreen(bool fullscreen);
     void Close();
     void BeginDrag();
     void SetTitle(const std::wstring& title);
@@ -53,6 +54,10 @@ private:
     WindowDelegate* delegate_ = nullptr;
     HINSTANCE instance_ = nullptr;
     HWND hwnd_ = nullptr;
+    bool fullscreen_ = false;
+    LONG_PTR restore_style_ = 0;
+    LONG_PTR restore_ex_style_ = 0;
+    WINDOWPLACEMENT restore_placement_ = {sizeof(WINDOWPLACEMENT)};
     UINT dpi_ = 96;
     int resize_border_dip_ = 8;
     int chrome_height_dip_ = 104;