# BaseWindowConstructorOptions Object * `width` Integer (optional) - Window's width in pixels. Default is `800`. * `height` Integer (optional) - Window's height in pixels. Default is `600`. * `x` Integer (optional) - (**required** if y is used) Window's left offset from screen. Default is to center the window. * `y` Integer (optional) - (**required** if x is used) Window's top offset from screen. Default is to center the window. * `useContentSize` boolean (optional) - The `width` and `height` would be used as web page's size, which means the actual window's size will include window frame's size and be slightly larger. Default is `false`. * `center` boolean (optional) - Show window in the center of the screen. Default is `false`. * `minWidth` Integer (optional) - Window's minimum width. Default is `0`. * `minHeight` Integer (optional) - Window's minimum height. Default is `0`. * `maxWidth` Integer (optional) - Window's maximum width. Default is no limit. * `maxHeight` Integer (optional) - Window's maximum height. Default is no limit. * `resizable` boolean (optional) - Whether window is resizable. Default is `true`. * `movable` boolean (optional) _macOS_ _Windows_ - Whether window is movable. This is not implemented on Linux. Default is `true`. * `minimizable` boolean (optional) _macOS_ _Windows_ - Whether window is minimizable. This is not implemented on Linux. Default is `true`. * `maximizable` boolean (optional) _macOS_ _Windows_ - Whether window is maximizable. This is not implemented on Linux. Default is `true`. * `closable` boolean (optional) _macOS_ _Windows_ - Whether window is closable. This is not implemented on Linux. Default is `true`. * `focusable` boolean (optional) - Whether the window can be focused. Default is `true`. On Windows setting `focusable: false` also implies setting `skipTaskbar: true`. On Linux setting `focusable: false` makes the window stop interacting with wm, so the window will always stay on top in all workspaces. * `alwaysOnTop` boolean (optional) - Whether the window should always stay on top of other windows. Default is `false`. * `fullscreen` boolean (optional) - Whether the window should show in fullscreen. When explicitly set to `false` the fullscreen button will be hidden or disabled on macOS. Default is `false`. * `fullscreenable` boolean (optional) - Whether the window can be put into fullscreen mode. On macOS, also whether the maximize/zoom button should toggle full screen mode or maximize window. Default is `true`. * `simpleFullscreen` boolean (optional) _macOS_ - Use pre-Lion fullscreen on macOS. Default is `false`. * `skipTaskbar` boolean (optional) _macOS_ _Windows_ - Whether to show the window in taskbar. Default is `false`. * `hiddenInMissionControl` boolean (optional) _macOS_ - Whether window should be hidden when the user toggles into mission control. * `kiosk` boolean (optional) - Whether the window is in kiosk mode. Default is `false`. * `title` string (optional) - Default window title. Default is `"Electron"`. If the HTML tag `` is defined in the HTML file loaded by `loadURL()`, this property will be ignored. * `icon` ([NativeImage](../native-image.md) | string) (optional) - The window icon. On Windows it is recommended to use `ICO` icons to get best visual effects, you can also leave it undefined so the executable's icon will be used. * `show` boolean (optional) - Whether window should be shown when created. Default is `true`. * `frame` boolean (optional) - Specify `false` to create a [frameless window](../../tutorial/window-customization.md#create-frameless-windows). Default is `true`. * `parent` BaseWindow (optional) - Specify parent window. Default is `null`. * `modal` boolean (optional) - Whether this is a modal window. This only works when the window is a child window. Default is `false`. * `acceptFirstMouse` boolean (optional) _macOS_ - Whether clicking an inactive window will also click through to the web contents. Default is `false` on macOS. This option is not configurable on other platforms. * `disableAutoHideCursor` boolean (optional) - Whether to hide cursor when typing. Default is `false`. * `autoHideMenuBar` boolean (optional) - Auto hide the menu bar unless the `Alt` key is pressed. Default is `false`. * `enableLargerThanScreen` boolean (optional) _macOS_ - Enable the window to be resized larger than screen. Only relevant for macOS, as other OSes allow larger-than-screen windows by default. Default is `false`. * `backgroundColor` string (optional) - The window's background color in Hex, RGB, RGBA, HSL, HSLA or named CSS color format. Alpha in #AARRGGBB format is supported if `transparent` is set to `true`. Default is `#FFF` (white). See [win.setBackgroundColor](../browser-window.md#winsetbackgroundcolorbackgroundcolor) for more information. * `hasShadow` boolean (optional) - Whether window should have a shadow. Default is `true`. * `opacity` number (optional) _macOS_ _Windows_ - Set the initial opacity of the window, between 0.0 (fully transparent) and 1.0 (fully opaque). This is only implemented on Windows and macOS. * `darkTheme` boolean (optional) - Forces using dark theme for the window, only works on some GTK+3 desktop environments. Default is `false`. * `transparent` boolean (optional) - Makes the window [transparent](../../tutorial/window-customization.md#create-transparent-windows). Default is `false`. On Windows, does not work unless the window is frameless. * `type` string (optional) - The type of window, default is normal window. See more about this below. * `visualEffectState` string (optional) _macOS_ - Specify how the material appearance should reflect window activity state on macOS. Must be used with the `vibrancy` property. Possible values are: * `followWindow` - The backdrop should automatically appear active when the window is active, and inactive when it is not. This is the default. * `active` - The backdrop should always appear active. * `inactive` - The backdrop should always appear inactive. * `titleBarStyle` string (optional) _macOS_ _Windows_ - The style of window title bar. Default is `default`. Possible values are: * `default` - Results in the standard title bar for macOS or Windows respectively. * `hidden` - Results in a hidden title bar and a full size content window. On macOS, the window still has the standard window controls (“traffic lights”) in the top left. On Windows, when combined with `titleBarOverlay: true` it will activate the Window Controls Overlay (see `titleBarOverlay` for more information), otherwise no window controls will be shown. * `hiddenInset` _macOS_ - Only on macOS, results in a hidden title bar with an alternative look where the traffic light buttons are slightly more inset from the window edge. * `customButtonsOnHover` _macOS_ - Only on macOS, results in a hidden title bar and a full size content window, the traffic light buttons will display when being hovered over in the top left of the window. **Note:** This option is currently experimental. * `trafficLightPosition` [Point](point.md) (optional) _macOS_ - Set a custom position for the traffic light buttons in frameless windows. * `roundedCorners` boolean (optional) _macOS_ - Whether frameless window should have rounded corners on macOS. Default is `true`. Setting this property to `false` will prevent the window from being fullscreenable. * `thickFrame` boolean (optional) - Use `WS_THICKFRAME` style for frameless windows on Windows, which adds standard window frame. Setting it to `false` will remove window shadow and window animations. Default is `true`. * `vibrancy` string (optional) _macOS_ - Add a type of vibrancy effect to the window, only on macOS. Can be `appearance-based`, `titlebar`, `selection`, `menu`, `popover`, `sidebar`, `header`, `sheet`, `window`, `hud`, `fullscreen-ui`, `tooltip`, `content`, `under-window`, or `under-page`. * `backgroundMaterial` string (optional) _Windows_ - Set the window's system-drawn background material, including behind the non-client area. Can be `auto`, `none`, `mica`, `acrylic` or `tabbed`. See [win.setBackgroundMaterial](../browser-window.md#winsetbackgroundmaterialmaterial-windows) for more information. * `zoomToPageWidth` boolean (optional) _macOS_ - Controls the behavior on macOS when option-clicking the green stoplight button on the toolbar or by clicking the Window > Zoom menu item. If `true`, the window will grow to the preferred width of the web page when zoomed, `false` will cause it to zoom to the width of the screen. This will also affect the behavior when calling `maximize()` directly. Default is `false`. * `tabbingIdentifier` string (optional) _macOS_ - Tab group name, allows opening the window as a native tab. Windows with the same tabbing identifier will be grouped together. This also adds a native new tab button to your window's tab bar and allows your `app` and window to receive the `new-window-for-tab` event. When setting minimum or maximum window size with `minWidth`/`maxWidth`/ `minHeight`/`maxHeight`, it only constrains the users. It won't prevent you from passing a size that does not follow size constraints to `setBounds`/`setSize` or to the constructor of `BrowserWindow`. The possible values and behaviors of the `type` option are platform dependent. Possible values are: * On Linux, possible types are `desktop`, `dock`, `toolbar`, `splash`, `notification`. * The `desktop` type places the window at the desktop background window level (kCGDesktopWindowLevel - 1). However, note that a desktop window will not receive focus, keyboard, or mouse events. You can still use globalShortcut to receive input sparingly. * The `dock` type creates a dock-like window behavior. * The `toolbar` type creates a window with a toolbar appearance. * The `splash` type behaves in a specific way. It is not draggable, even if the CSS styling of the window's body contains -webkit-app-region: drag. This type is commonly used for splash screens. * The `notification` type creates a window that behaves like a system notification. * On macOS, possible types are `desktop`, `textured`, `panel`. * The `textured` type adds metal gradient appearance (`NSWindowStyleMaskTexturedBackground`). * The `desktop` type places the window at the desktop background window level (`kCGDesktopWindowLevel - 1`). Note that desktop window will not receive focus, keyboard or mouse events, but you can use `globalShortcut` to receive input sparingly. * The `panel` type enables the window to float on top of full-screened apps by adding the `NSWindowStyleMaskNonactivatingPanel` style mask,normally reserved for NSPanel, at runtime. Also, the window will appear on all spaces (desktops). * On Windows, possible type is `toolbar`.