Examine source code of Wayback Everywhere

{
  "manifest_version": 2,
  "name": "Wayback Everywhere",
  "description": "Automatically redirect every page to its archived version in Wayback Machine, except the sites in Excludes List",
  "version": "1.1.0.4resigned1",
  "homepage_url": "https://github.com/gkrishnaks/WaybackEverywhere-Firefox",
  "icons": {
    "16": "images/icon.png",
    "32": "images/icon@2x.png",
    "48": "images/icon@2x.png",
    "64": "images/icon@2x.png",
    "128": "images/icon@2x.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "notifications",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "applications": {
    "gecko": {
      "id": "gokulakrishnaks@gmail.com"
    }
  },
  "page_action": {
    "default_title": "Wayback Everywhere",
    "default_popup": "popup.html",
    "default_icon": "images/icon@2x.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://web.archive.org/*"
      ],
      "js": [
        "js/content/detectwaybackMessages.js",
        "js/content/getAllFirstPartylinks.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/commonUtils/parseUrl.js",
      "js/background/redirect.js",
      "js/background/readData.js",
      "js/background/background.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  }
}