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Apple has released Safari Technology Preview 139

Macos Big Sur Preview Safari Hero
Macos Big Sur Preview Safari Hero (Image credit: Rene Ritchie)

What you need to know

  • Apple has released Safari Technology Preview 139.
  • The latest version of the experimental browser features a number of bug fixes and performance improvements.
  • The update is only for users running macOS Big Sur or macOS Monterey.

The latest version of Safari Technology Preview is here.

Today, Apple released Safari Technology Preview 139. The latest update includes the expected rounds of performance improvements and bug fixes for users who enjoy running the latest innovations that Apple's built-in browser for the Mac has to offer.

The latest version of Safari Technology Preview is an experimental version of Safari for users running a Mac that currently has macOS Big Sur or macOS Monterey installed. The preview allows developers and the generally curious to test out the latest and greatest features of Apple's browser and provide feedback to the company before the public version goes live for everyone at some point in the future.

The new update for the preview is available to users running macOS Monterey and macOS Big Sur. Apple has noted in the release notes of Safari Technology Preview 137 that it has released a number of updates for Web Inspector, CSS, :has(), Web Animations, Rendering, SVG, WebAuthn, Web API, JavaScript, Content Security Policy, Media, Service Workers, and Web Extensions.

If you want, you can download (opens in new tab) Safari Technology Preview and test it out for yourself. You can check out the release notes (opens in new tab) of Safari Technology Preview 139 on the Apple Developer website.

Joe Wituschek
Contributor

Joe Wituschek is a Contributor at iMore. With over ten years in the technology industry, one of them being at Apple, Joe now covers the company for the website. In addition to covering breaking news, Joe also writes editorials and reviews for a range of products. He fell in love with Apple products when he got an iPod nano for Christmas almost twenty years ago. Despite being considered a "heavy" user, he has always preferred the consumer-focused products like the MacBook Air, iPad mini, and iPhone 13 mini. He will fight to the death to keep a mini iPhone in the lineup. In his free time, Joe enjoys video games, movies, photography, running, and basically everything outdoors.