Apple today released a new update to Safari Technology Preview, the beta browser that Apple first introduced in March 2016. Apple designed the Safari Technology Preview to test features that might be introduced in future versions of Safari.

Safari Technology Preview feature
Version 143 ‌Safari Technology Preview includes bug fixes and performance improvements for Web Inspector, CSS container queries, CSS Cascade layers, Subgrid, CSS, JavaScript, rendering, web animation, SVG, scrolling, WebAuthn, WebGL, HTML, Web API, media, accessibility, and file system access and web extensions.

The current Safari Technology Preview build is based on the Safari 15.4 update and includes Safari 15 features introduced in macOS Monterey.

The Safari Technology Preview‌ update is available through the Software Update mechanism in System Preferences to anyone who has downloaded the browser. The full release notes for the update are available on the Safari Technology Preview website.

With ‌Safari Technology Preview‌‌, Apple aims to collect feedback from developers and users about the browser development process. Safari Technology Preview‌ can run alongside your existing Safari browser, and while it is designed for developers, it does not require a developer account to download it.

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