Examine source code of Vicubo Web Extractor

{
  "name": "Vicubo Web Extractor",
  "version": "3.4",
  "manifest_version": 2,
  "description": "Es una herramienta diseñada para ayudarte a extraer contenido útil de páginas web, pudiendo enviar el contenido a Vicubo Cloud",
  "options_page": "./views/options.html",
  "icons": {
    "128": "icon_vicubocloud.png"
  },
  "browser_action": {
    "default_title": "Vicubo Web Extractor"
  },
  "background": {
    "scripts": [
      "./scripts/events.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [],
      "js": [
        "./scripts/jquery-3.6.0.min.js",
        "./scripts/content.js",
        "./scripts/logos.js",
        "./scripts/styles.js",
        "./scripts/Readability.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "tabs",
    "storage",
    "activeTab",
    "<all_urls>",
    "https://app.vicubocloud.es/*",
    "https://migration.vicubocloud.es/*",
    "https://api.mailjet.com/*",
    "https://www.vicubocloud.es/*"
  ],
  "web_accessible_resources": [
    "scripts/jquery-3.6.0.min.js",
    "scripts/pdfjs/pdf.min.js",
    "scripts/pdfjs/pdf.worker.min.js",
    "spinner.gif"
  ],
  "homepage_url": "https://www.vicubocloud.es/",
  "browser_specific_settings": {
    "gecko": {
      "id": "vicubo.extractor@e-intelligent.es",
      "strict_min_version": "109.0"
    }
  }
}