{
  "id": 18007343,
  "title": "iOS 27.3 and macOS 27.3 add Vertical Tabs, Adaptive Dark Mode, and more to Safari",
  "url": "https://urgent.news/2026/11/03/ios-27-3-and-macos-27-3-add-vertical-tabs-adaptive-dark-mode-and-more",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-03T18:51:53.000Z",
  "source": {
    "name": "9to5Mac",
    "slug": "9to5mac",
    "url": "https://9to5mac.com/2026/11/03/ios-27-3-and-macos-27-3-add-vertical-tabs-adaptive-dark-mode-and-more-to-safari/"
  },
  "original_language": "en",
  "account": "Apple has just launched the initial developer betas of iOS 27.3, iPadOS 27.3, and macOS 27.3, introducing several notable features to Safari. Among the new additions are a vertical tab layout, Adaptive Dark Mode, and Siri AI Custom Actions. The vertical tab design in Safari reorients tabs vertically along the left side of the browser window, replacing the traditional horizontal layout typically found in the top of the window. By default, these tabs are shown as icons to efficiently utilize space. Users can customize the tab bar size, allowing them to view website titles if desired. To activate Vertical Tabs in the iOS 27.3 beta, navigate to Settings > Apps > Safari, and locate the Vertical Tabs option. Alternatively, users can enable the feature directly from the \"View\" menu within the Safari app on macOS and iPadOS. This vertical tab layout mirrors a trend popularized by Arc, a browser extension from The Browser Company, which has since discontinued its development and will fully retire the feature by December. Additionally, Apple is rolling out Adaptive Dark Mode, a capability that automatically enables Dark Mode on websites that lack native support. When visiting a non-supporting site on iPhone, iPad, or Mac, a \"Try\" button appears, granting users the option to toggle on Adaptive Dark Mode for that specific website. Users can opt for automatic application of Dark Mode or manage it on a case-by-case basis. Another major enhancement is the ability for Siri to perform direct actions on Safari tabs across iOS 27.3, iPadOS 27.3, and macOS 27.3. This functionality enables users to manage tabs through voice commands, such as moving, sorting, organizing, and closing them with ease. Future updates anticipate Siri's on-screen awareness expanding to encompass the full content of web pages, not just the visible portion. The iOS 27.3, macOS 27.3, and iPadOS 27.3 betas are now available to developers for testing, with an anticipated release to the general public in December.",
  "summary": "Apple just released the first betas of iOS 27.3, iPadOS 27.3, and macOS 27.3, with some big changes to Safari. The updates add a new vertical tab layout, Adaptive Dark Mode, and Siri AI Custom Actions. more…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 3,
    "also_reported_by": [
      {
        "outlet": "Daring Fireball",
        "title": "Safari 27.3 Beta Adds Vertical Tabs and Adaptive Dark Mode",
        "url": "https://urgent.news/2026/11/03/safari-27-3-beta-adds-vertical-tabs-and-adaptive-dark-mode",
        "published": "2026-11-03T19:26:41.000Z"
      },
      {
        "outlet": "TechRadar",
        "title": "Safari finally gets vertical tabs — and a new way to make any site dark, all thanks to iOS 27.3",
        "url": "https://urgent.news/2026/11/03/safari-finally-gets-vertical-tabs-and-a-new-way-to-make-any-site-dark",
        "published": "2026-11-03T21:00:43.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}