Examine source code of Scrollerx

{
  "manifest_version": 3,
  "name": "Scrollerx",
  "version": "1.0",
  "description": "A Chrome extension to scroll to the Top or Bottom",
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "icons": {
    "48": "icons/icon48.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon48.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mdmisrii@example.com",
      "strict_min_version": "88.0",
      "strict_max_version": "99.*"
    }
  }
}