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Safari Technology Preview

Download the Safari Technology Preview


This is a pre-release version of Safari, so it is still testing. The release notes are printed below, but this is for people who are interested in testing new features before the official release. I've hosted a backup incase the download becomes unavailable in the future, so have fun with this version! There are not any significant visual changes, everything is under the hood.

Browser Differences
  • ·      Safari Technology Preview can be run side-by-side with Safari and set as the default browser
  • ·      Separate local data stores are used for history, bookmarks, cookies, and cache
  • ·      Browsing history and bookmarks are synced over iCloud when iCloud sync is enabled
  • ·      The Develop menu is enabled by default
  • ·      Receives regular updates through the Updates tab of the Mac App Store
  • ·      Bug reports made on bugreport.apple.com should specify Safari Technology Preview

JavaScript Improvements
  • ·      ECMAScript 6 support including lexical scoping, iterators, generators, arrow functions, default parameter values and many new built-in APIs
  • ·      Better standards compliant IndexedDB support with more stability
  • ·      Included the B3 JavaScript JIT compiler with low-latency, high-throughput that boosts performance
  • ·      Added the ability to use `document.execCommand('copy')` and `document.execCommand('cut')` in response to a user gesture to copy and cut text programmatically

HTML Enhancements
  • ·      The latest implementation of the Shadow DOM specification
  • ·      Added support for Content Security Policy Level 2

Web Inspector Changes
  • ·      Added memory summary and JavaScript allocations timelines
  • ·      Added a fast JavaScript sampling profiler
  • ·      Improved JavaScript profiling timeline view

Behavior Changes
  • ·      Included many web compatibility fixes and bug fixes

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