Apple releases Safari technical preview 143 with bug fixes and performance improvements

Apple today released a new update for Safari Technology Preview, the experimental browser Apple first launched in March 2016. Apple designed the ​​‌Safari Technology Preview‌ to test features that may be introduced in future versions of Safari.

‌Safari Technology Preview‌ Version 143 includes updates for Web Inspector, CSS Container Queries, CSS Overlays, Subgrids, CSS, JavaScript, Rendering, Web Animation, SVG, Scroll, WebAuthn, Bug fixes and performance improvements for WebGL, HTML, Web API, media, accessibility, file system access, and web extensions.

The current version of ‌Safari Technology Preview‌ is built on the Safari 15.4 update, which includes Safari 15 features introduced in macOS Monterey.

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

Apple launches Safari Technology Preview to gather feedback from developers and users on its browser development process. ‌Safari Technology Preview‌ can run alongside your existing Safari browser, and while it's designed for developers, it doesn't require a developer account to download.

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