Examine source code of F24 Smart

{
  "manifest_version": 2,
  "name": "F24 Smart by DATA WARE",
  "version": "2.24.0",
  "description": "Compila i modelli F24 sul sito Agenzia Entrate (e sulle banche censite) a partire da un file .f24smart.json: verifica l'integrità, riporta i valori su richiesta e confronta i totali sul Riepilogo.",
  "author": "DATA WARE S.R.L.",
  "homepage_url": "https://f24smart.com/",
  "developer": {
    "name": "DATA WARE S.R.L."
  },
  "options_ui": {
    "page": "popup/dettagli.html",
    "open_in_tab": false,
    "browser_style": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "f24smart@dataware.it",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo",
          "financialAndPaymentInfo"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "https://telematici.agenziaentrate.gov.it/*",
    "https://www.relaxbanking.it/*",
    "https://relaxbanking.it/*",
    "https://f24smart.com/*"
  ],
  "browser_action": {
    "default_title": "F24 Smart by DATA WARE",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16-v3.png",
      "32": "icons/icon-32-v3.png",
      "48": "icons/icon-48-v3.png",
      "96": "icons/icon-96-v3.png"
    }
  },
  "background": {
    "page": "background/background.html",
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://telematici.agenziaentrate.gov.it/*"
      ],
      "js": [
        "lib/f24-target.js",
        "lib/f24-build.js",
        "lib/f24-integrity.js",
        "content/mapper-AE.js",
        "content/content.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    },
    {
      "matches": [
        "https://www.relaxbanking.it/*",
        "https://relaxbanking.it/*"
      ],
      "js": [
        "lib/f24-target.js",
        "lib/f24-build.js",
        "lib/f24-integrity.js",
        "content/mapper-bcc.js",
        "content/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "icons": {
    "16": "icons/icon-16-v3.png",
    "32": "icons/icon-32-v3.png",
    "48": "icons/icon-48-v3.png",
    "96": "icons/icon-96-v3.png",
    "128": "icons/icon-128-v3.png"
  },
  "web_accessible_resources": [
    "icons/icon-16-v3.png",
    "icons/icon-32-v3.png",
    "icons/icon-48-v3.png",
    "banner/banner_250x48.png",
    "banner/banner_dataware_250x48.png",
    "img/it.png"
  ]
}