Examine source code of Instagram Tab Title

{
  "manifest_version": 2,
  "name": "Instagram Tab Title",
  "version": "1.0",
  "description": "Shows the Instagram username in the browser tab title.",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.instagram.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "extensions@sdfolio.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}