Learning English words

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Learning English words",
  "short_name": "LEW",
  "version": "1.0.3",
  "description": "Extension for learning words",
  "permissions": [
    "tabs",
    "storage"
  ],
  "action": {
    "default_popup": "index.html?#/popup",
    "default_title": "Learning English words",
    "default_icon": {
      "16": "assets/icons8-e-16.png",
      "32": "assets/icons8-e-32.png",
      "48": "assets/icons8-e-48.png",
      "128": "assets/icons8-e-48.png"
    }
  },
  "icons": {
    "32": "assets/icons8-e-32.png",
    "48": "assets/icons8-e-48.png"
  },
  "options_page": "index.html?#/options",
  "content_scripts": [
    {
      "js": [
        "contentPage.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "service_worker": "serviceWorker.js"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}