Safari Technology Preview for Mac

By Apple Free

Developer's Description

Get a sneak peek at upcoming web technologies in OS X and iOS and experiment with these technologies in your websites and extensions.

This release of Safari Technology Preview contains the most recent additions and improvements to WebKit and the latest advances in Safari web technologies.

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
  • Full Specifications

    What's new in version Release 1


    Release March 30, 2016
    Date Added March 30, 2016
    Version Release 1

    Operating Systems

    Operating Systems Macintosh, Mac OS X 10.11
    Additional Requirements Compatible with OS X 10.11.4 or later


    Total Downloads 523
    Downloads Last Week 2
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    Related Software

    Google Chrome

    Google Chrome

    Apple Safari

    Apple Safari





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