Examine source code of FastCDN

{
  "name": "FastCDN",
  "version": "0.1.0",
  "manifest_version": 2,
  "icons": {
    "96": "icons/logo-v.png"
  },
  "description": "FastCDN supports variable javascript library optimization at home and abroad to accelerate website access",
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "author": "https://github.com/benben-miao",
  "homepage_url": "https://github.com/benben-miao/FastCDN"
}