Examine source code of SmartTestTool

{
  "description": "一款火狐插件，实现自动向所有input输入框填写随机字符串的功能，方便测试工作进行",
  "manifest_version": 2,
  "name": "SmartTest",
  "version": "1.3",
  "homepage_url": "https://github.com/leoparddne/SmartTest",
  "icons": {
    "48": "icons/border-48.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/border-48.png",
    "default_title": "SmartTest",
    "default_popup": "popup/choose_beast.html"
  }
}