Examine source code of Itzuli+

{
  "name": "Itzuli+",
  "version": "3.10",
  "manifest_version": 2,
  "description": "Itzuli+ Extentsioa!",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "tabs",
    "http://*/*",
    "https://*/*",
    "*://developer.mozilla.org/*",
    "<all_urls>"
  ],
  "background": {
    "persistent": true,
    "scripts": [
      "thirdParty/jquery.min.js",
      "googleDocsUtil.js",
      "background.js",
      "thirdParty/jspdf.min.js",
      "thirdParty/html2canvas.js",
      "thirdParty/purify.min.js",
      "thirdParty/quill.js",
      "recorder.js"
    ]
  },
  "browser_action": {
    "default_title": "Itzuli+",
    "default_icon": {
      "16": "images/itzuli16.png",
      "32": "images/itzuli32.png",
      "48": "images/itzuli48.png",
      "128": "images/itzuli128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "thirdParty/jquery.min.js",
        "thirdParty/jquery-ui-draggable.js",
        "googleDocsUtil.js",
        "thirdParty/jspdf.min.js",
        "thirdParty/html2canvas.js",
        "thirdParty/rangy-core.js",
        "thirdParty/rangy-classapplier.js",
        "toolbar.js",
        "thirdParty/quill.js",
        "recorder.js",
        "thirdParty/purify.min.js",
        "thirdParty/bootstrap.bundle.min.js"
      ],
      "css": [
        "thirdParty/material-components-web.min.css",
        "thirdParty/icon.css",
        "thirdParty/toolbar.css",
        "thirdParty/accordion.css",
        "thirdParty/estilos.css",
        "thirdParty/quill.bubble.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "images/itzuli16.png",
    "32": "images/itzuli32.png",
    "48": "images/itzuli48.png",
    "128": "images/itzuli128.png"
  },
  "web_accessible_resources": [
    "*.js",
    "thirdParty/jspdf.min.js",
    "thirdParty/html2canvas.js",
    "thirdParty/purify.min.js",
    "properties/*.inc",
    "thirdParty/jquery-ui.css",
    "thirdParty/quill.js",
    "thirdParty/quill.bubble.css",
    "images/*.png",
    "*.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c1ba663-727a-4cf5-a1d4-f6c51cd6fb4d}"
    }
  }
}