Examine source code of Shoppiday cashback

{
  "applications": {
    "gecko": {
      "id": "{44b9b236-a26a-4131-bba5-ca6673d0f8e1}"
    }
  },
  "author": "Shoppiday Digital",
  "background": {
    "page": "background.html"
  },
  "browser_action": {
    "default_icon": "data/logo-48.png",
    "default_title": "Shoppiday cashback"
  },
  "default_locale": "es",
  "description": "__MSG_extDescription__",
  "homepage_url": "https://www.shoppiday.es",
  "icons": {
    "16": "data/logo-16.png",
    "32": "data/logo-32.png",
    "48": "data/logo-48.png",
    "128": "data/logo-128.png"
  },
  "manifest_version": 2,
  "name": "Shoppiday cashback",
  "options_ui": {
    "chrome_style": true,
    "page": "options.html"
  },
  "permissions": [
    "cookies",
    "activeTab",
    "tabs",
    "storage",
    "webNavigation",
    "webRequest",
    "webRequestBlocking",
    "http://*/*",
    "https://*/*"
  ],
  "short_name": "Shoppiday cashback",
  "version": "0.0.9.14",
  "web_accessible_resources": [
    "data/*"
  ]
}