Examine source code of Startpage Return Title

{
  "manifest_version": 2,
  "name": "Startpage Return Title",
  "version": "1.0.0",
  "description": "Sets the browser tab title to your search query on Startpage.",
  "browser_specific_settings": {
    "gecko": {
      "id": "startpage-return-title@skoula.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.startpage.com/*",
        "*://startpage.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}