Examine source code of CSS Insight

{
  "manifest_version": 3,
  "name": "__MSG_chromename__",
  "short_name": "__MSG_shortname__",
  "description": "__MSG_description__",
  "version": "1.20.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "{3cf44542-4a82-4868-a366-be8126b42458}",
      "strict_min_version": "113.0"
    },
    "gecko_android": {
      "id": "{3cf44542-4a82-4868-a366-be8126b42458}",
      "strict_min_version": "120.0"
    }
  },
  "author": "MarkAlexI",
  "homepage_url": "https://ext.pp.ua/css-insight.html",
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "192": "images/icon-192.png",
    "512": "images/icon-512.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "scripting",
    "activeTab",
    "tabs"
  ],
  "host_permissions": [
    "*://*/"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_defaulttitle__"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/formatRule.js",
        "scripts/getTagName.js",
        "scripts/getSubSelectors.js"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "default-src 'self'; style-src 'self';"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "update/update.html",
        "update/update.css",
        "update/update.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "scripts/service_worker.js"
    ],
    "persistent": false,
    "type": "module"
  }
}