Examine source code of Jalali Date Convertor

{
  "manifest_version": 3,
  "name": "Jalali Date Convertor تبدیل تاریخ جلالی",
  "version": "1.0.5",
  "description": "Convert Jalali(Shamsi) date to Gregorian date and vice versa \n. جهت تبدیل تاریخ شمسی به میلادی و برعکس",
  "author": "Roohallah Alizadeh",
  "browser_specific_settings": {
    "gecko": {
      "id": "JalaliDateConvertor.roohial57@gmail.com",
      "strict_min_version": "102.0"
    },
    "chrome": {}
  },
  "background": {
    "scripts": [
      "selected-text/add-context-menu-gecko.js"
    ],
    "service_worker": "background-chrome.js"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "scripting",
    "storage"
  ],
  "icons": {
    "128": "img/icon128.png"
  },
  "action": {
    "default_popup": "./../../popup/convertor.html",
    "default_title": "Jalali Date Convertor"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "js/jalaali-core.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/jalaali-core.js",
        "selected-text/script.js",
        "js/jalaali.min.js"
      ],
      "css": [
        "selected-text/styles.css"
      ],
      "run_at": "document_end"
    }
  ]
}