Examine source code of Video Focus

{
  "manifest_version": 3,
  "name": "Video Focus",
  "version": "1.0.1",
  "description": "Customise video playback to make it more engaging, can be useful if you struggle paying attention to videos",
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "video-focus@enzonik.com"
    }
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Video Focus"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./dist/content-scripts/main.js"
      ],
      "run_at": "document_end"
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "dist/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}