Examine source code of Hoverable

{
  "manifest_version": 3,
  "version": "1.0.2",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c71f2920-c94b-4936-8af4-25dac22c5372}"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/assets/Icon16.jpeg",
      "48": "/assets/Icon.jpeg",
      "128": "/assets/Icon128.jpeg"
    }
  },
  "default_locale": "en"
}