Examine source code of Tab Title Overrider

{
  "manifest_version": 3,
  "name": "Tab Title Overrider",
  "version": "1.0",
  "description": "Tab Renamer: Custom Title Override & Persistence",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_title": "Tab Title Overrider",
    "default_popup": "popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{188c89b2-ccd7-4af0-bbec-0ce24cae723f}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}