Examine source code of Vertigo Video Zoom

{
  "manifest_version": 3,
  "name": "Vertigo Video Zoom",
  "description": "allows to zoom any video on website with shift + mouse wheel",
  "version": "1.3",
  "author": "sodomygnom",
  "permissions": [
    "activeTab"
  ],
  "action": {
    "default_title": "Vertigo Video Zoom"
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/index.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{63b80981-fc98-4782-8741-5f4958100943}",
      "strict_min_version": "109.0"
    }
  }
}