Safari Technology Preview

About

Safari Technology Preview gives you a sneak peek at upcoming web technologies in macOS and iOS, so you can experiment with them in your websites and extensions. It is a beta of the next version of Safari, intended for upcoming macOS releases.

There are two versions: one for macOS 27, which requires macOS 27 or later, and one for macOS 26, which requires macOS 26.4 or later. To access the latest beta versions of Safari, sign in with your Apple Account. The latest release, Release 255, was posted October 22, 2026.

Apple also provides guides, reference material, and sample code for implementing web technologies, along with videos from its engineers and the Apple Developer Forums, where you can ask questions and discuss web development topics.