Examine source code of Tabshot

{
  "manifest_version": 2,
  "name": "Tabshot",
  "version": "2.6",
  "description": "截取当前标签页可见区域保存为图片，视频截图，canvas截图。",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Tabshot",
    "default_popup": "popup.htm"
  },
  "icons": {
    "64": "icon.png"
  },
  "permissions": [
    "tabs",
    "<all_urls>",
    "activeTab",
    "notifications",
    "contextMenus"
  ],
  "options_ui": {
    "page": "options.htm"
  },
  "commands": {
    "capture_video": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description": "截图视频"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ec689ca7-1f61-48a6-a0b7-f00f721dbd76}"
    }
  }
}