Examine source code of Video Control Panel

{
  "manifest_version": 3,
  "name": "Video Control Panel",
  "version": "1.4",
  "description": "Control HTML5 video playback speed and volume on any website",
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon.png",
      "48": "icon.png",
      "128": "icon.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icon.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "video-control@yourdomain.com",
      "strict_min_version": "89.0"
    }
  }
}