Examine source code of Vilfo

{
  "manifest_version": 2,
  "name": "__MSG_extensionTitle__",
  "description": "__MSG_extensionDescription__",
  "version": "0.5.3",
  "applications": {
    "gecko": {
      "id": "browserextension@vilfo.com"
    }
  },
  "icons": {
    "16": "icons/icon_logo16x16.png",
    "48": "icons/icon_logo48x48.png",
    "128": "icons/icon_logo128x128.png"
  },
  "default_locale": "en",
  "author": "Vilfo.com",
  "browser_action": {
    "default_icon": {
      "19": "icons/icon_gray19x19.png",
      "38": "icons/icon_gray38x38.png"
    },
    "default_popup": "index.html"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "homepage_url": "https://www.vilfo.com",
  "permissions": [
    "privacy",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "http://*/*",
    "https://*/*"
  ]
}