Examine source code of Shaparak Verifier

{
  "manifest_version": 2,
  "name": "Shaparak Verifier",
  "version": "2.0.2resigned1",
  "author": "MohamadReza Deylami",
  "description": "Verify Shaparak gateways and protect users against phishing attacks",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "32": "assets/images/icons/icon_128.png",
    "48": "assets/images/icons/icon_128.png",
    "64": "assets/images/icons/icon_128.png",
    "128": "assets/images/icons/icon_128.png"
  },
  "page_action": {
    "default_icon": {
      "32": "assets/images/icons/icon_128.png",
      "48": "assets/images/icons/icon_128.png",
      "64": "assets/images/icons/icon_128.png",
      "128": "assets/images/icons/icon_128.png"
    },
    "default_title": "Shaparak Verifier",
    "default_popup": "assets/data/popup.html"
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@shaparak-verifier"
    }
  }
}