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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_extName__",
  "description": "__MSG_extDesc__",
  "default_locale": "en",
  "version": "12.4.1",
  "manifest_version": 3,
  "icons": {
    "16": "imgs/icon_16.png",
    "48": "imgs/icon_48.png",
    "64": "imgs/icon_64.png",
    "128": "imgs/icon_128.png",
    "256": "imgs/icon_256.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "action": {
    "default_icon": "imgs/icon_128.png",
    "default_title": "__MSG_extName__"
  },
  "commands": {
    "open-google": {
      "description": "__MSG_extDesc__",
      "suggested_key": {
        "default": "Ctrl+Shift+C"
      }
    },
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+C"
      }
    }
  },
  "permissions": [
    "storage",
    "system.display",
    "windows",
    "commands"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  }
}