Examine source code of Manga Notifier

{
  "author": "Point Blank",
  "version": "1.2.1resigned1",
  "background": {
    "page": "background.html",
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/manga-48.png"
    },
    "default_title": "Manga Notifier",
    "default_popup": "popup/choose_interval.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/manga.js"
      ]
    }
  ],
  "description": "Notifies you when a new manga is released.",
  "homepage_url": "https://github.com/Nischay-Pro/manga-notifier",
  "icons": {
    "48": "icons/manga-48.png",
    "96": "icons/manga-96.png"
  },
  "manifest_version": 2,
  "name": "Manga Notifier",
  "options_page": "options/options.html",
  "permissions": [
    "unlimitedStorage",
    "notifications",
    "storage",
    "*://mangafox.me/*",
    "webRequest",
    "activeTab",
    "tabs"
  ],
  "web_accessible_resources": [
    "options/options.html"
  ],
  "-ms-preload": {
    "backgroundScript": "backgroundScriptsAPIBridge.js",
    "contentScript": "contentScriptsAPIBridge.js"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{91b8ebd6-a262-4f4d-a290-a1b91f891dc2}"
    }
  }
}