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Apple Releases Safari Technology Preview 227 With Broad Web Platform Fixes

Apple uses this public preview to collect real‑world feedback before features roll into the stable Safari.

Overview

  • The 227 build delivers fixes and updates across Accessibility, Animations, CSS, Editing, Forms, HTML, Images, JavaScript, Networking, Rendering, SVG, Storage, Tables, Web API, Web Inspector, and WebAssembly.
  • Notable additions include the Navigation API, the scrollend event, and new CSS capabilities such as position-visibility, scrollbar-color, and math-shift, plus WebAssembly resizable memory buffers.
  • Apple’s release notes cite WebKit changes spanning revisions 298484@main through 299099@main.
  • This release is compatible with macOS Sequoia and the forthcoming macOS Tahoe.
  • Users who have downloaded Safari Technology Preview can update via System Settings under Software Update, and the app runs alongside the stable Safari without a developer account.