Examine source code of RF5-Recon

{
  "manifest_version": 2,
  "name": "RF5 Recon",
  "version": "2.1",
  "description": "Extensión de reconocimiento web ofensivo avanzada (tipo OWASP Toolkit)",
  "permissions": [
    "tabs",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "RF5 Recon",
    "default_icon": "icon48.png"
  },
  "icons": {
    "48": "icon48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "rf5-recon@rogerf5.dev",
      "strict_min_version": "58.0"
    }
  }
}