Examine source code of Vulners Web Scanner

{
  "author": "vulners.com",
  "background": {
    "persistent": true,
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/logo_small.png",
    "48": "icons/logo_small.png",
    "128": "icons/logo_small.png"
  },
  "browser_action": {
    "default_icon": "icons/logo_small.png",
    "default_popup": "index.html",
    "default_title": "Vulners web scanner"
  },
  "description": "Tiny vulnerability scanner based on vulners.com vulnerability database. Scan websites while you surf internet!",
  "manifest_version": 2,
  "name": "Vulners Web Scanner",
  "short_name": "Vulners Web scanner",
  "permissions": [
    "tabs",
    "webRequest",
    "webNavigation",
    "http://*/*",
    "https://*/*"
  ],
  "version": "1.0.7resigned1",
  "browser_specific_settings": {
    "gecko": {
      "id": "{d7439f88-8bf7-45c2-8aec-beed58c6b3bf}"
    }
  }
}