Examine source code of IBF短網址

{
  "name": "IBF Short URL",
  "version": "1.11",
  "description": "讓IBF.TW幫您縮短冗長、難記憶的網址吧！",
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "notifications",
    "unlimitedStorage",
    "https://ibf.tw/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "IBF Short URL Service",
    "default_icon": {
      "16": "images/ibf_16.png",
      "32": "images/ibf_32.png",
      "48": "images/ibf_48.png",
      "128": "images/ibf_128.png"
    },
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html"
  },
  "icons": {
    "16": "images/ibf_16.png",
    "32": "images/ibf_32.png",
    "48": "images/ibf_48.png",
    "128": "images/ibf_128.png"
  },
  "web_accessible_resources": [
    "images/*.png"
  ],
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "services@bingfeng.tw"
    }
  }
}