app.json

{
  "_comment_url": "Required. The website URL to load in the native window.",
  "url": "https://example.com",

  "_comment_title": "Optional. Fixed window title. If empty, the title syncs with the page title (Windows only).",
  "title": "",

  "_comment_icon": "Optional. Path to a custom window icon (.ico or .png). Absolute or relative to the executable.",
  "icon": "",

  "_comment_prefer_dark_mode": "Optional. Values: 'default' (let OS decide), 'dark' (request dark site theme), 'light' (request light site theme). Only works on sites that support prefers-color-scheme CSS.",
  "prefer_dark_mode": "default",

  "_comment_force_dark_mode": "Optional. Values: 'on' or 'off'. When 'on', forces all sites into dark mode even if they don't natively support it (like Chrome's force-dark flag). Windows only.",
  "force_dark_mode": "off",

  "_comment_start_minimized": "Optional. Values: 'on' or 'off'. When 'on', the app starts minimized to the taskbar.",
  "start_minimized": "off",

  "_comment_allow_only_one_instance": "Optional. Values: 'off' (allow multiple instances), 'on' or 'first' (exit if already running), 'last' (kill existing instance and take over). Windows only.",
  "allow_only_one_instance": "off"
}