Examine source code of Select and Search

{
  "manifest_version": 2,
  "name": "Select and Search",
  "version": "1.0",
  "description": "Search selected text quickly with multiple search engines and custom ones via context menu.",
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon64.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0668d0e6-9a49-4dba-9a12-187126af2158}",
      "strict_min_version": "112.0"
    }
  }
}