electron/docs/api/structures/browser-window-options.md

BrowserWindowConstructorOptions 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 <title> is defined in the HTML file loaded by loadURL(), this property will be ignored.
• icon (NativeImage | 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.
• paintWhenInitiallyHidden boolean (optional) - Whether the renderer should be active when show is false and it has just been created. In order for document.visibilityState to work correctly on first load with show: false you should set this to false. Setting this to false will cause the ready-to-show event to not fire. Default is true.
• frame boolean (optional) - Specify false to create a frameless window. Default is true.
• parent BrowserWindow (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 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. 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 (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.
• fullscreenWindowTitle boolean (optional) macOS Deprecated - Shows the title in the title bar in full screen mode on macOS for hiddenInset titleBarStyle. Default is false.
• 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 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.
• webPreferences WebPreferences (optional) - Settings of web page's features.
• titleBarOverlay Object | Boolean (optional) - When using a frameless window in conjunction with win.setWindowButtonVisibility(true) on macOS or using a titleBarStyle so that the standard window controls ("traffic lights" on macOS) are visible, this property enables the Window Controls Overlay JavaScript APIs and CSS Environment Variables. Specifying true will result in an overlay with default system colors. Default is false.
  • color String (optional) Windows - The CSS color of the Window Controls Overlay when enabled. Default is the system color.
  • symbolColor String (optional) Windows - The CSS color of the symbols on the Window Controls Overlay when enabled. Default is the system color.
  • height Integer (optional) macOS Windows - The height of the title bar and Window Controls Overlay in pixels. Default is system height.

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.
• 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.