Release Notes for Safari Technology Preview 82

Safari Technology Preview Release 82 is now available for download for macOS Mojave and macOS High Sierra. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS Mojave and from the Mac App Store’s Updates tab on macOS High Sierra. After updating to macOS Mojave, you may have to reinstall Safari Technology Preview.

This release covers WebKit revisions 244684-245007.


  • Enabled Fetch Keep Alive by default (r244931)
  • Changed to resolve the percentage values of inset properties against proper box. (r244906)
  • Changed to use the normal loading path for ping loads (r244700)
  • Fixed propertyRegistry() to be overridden for SVGFEFloodElement and SVGFEMergeElement (r244690)
  • Fixed programmatic scrolling with async overflow scroll (r244947)
  • Marked U+01C0 as a homograph of U+006C (r244903)
  • Updated WebKit to rely more on ICU’s UTF-8 support (r244828)


  • Fixed crash when opening the inspector when using already in-flight generators and async functions (r244915)
  • Changed setting a frame src attribute to not run a JavaScript URL synchronously (r244892)


  • Changed WebAudio Node JS wrappers to not be collected if events can be fired (r244977)
  • Updated getDisplayMedia to require a user gesture (r244749)
  • Updated XMLHttpRequest to propagate user gestures for media playback (r244823)


  • Made a change to stop IndexedDB transactions to release locked database files when network process is ready to suspend (r244687)
  • Updated to terminate Service Worker processes that use too much CPU (r244979)
  • Updated to terminate unresponsive Service Worker processes (r244936)


  • Fixed font-weight: 1000 to be parsed successfully (r244817)
  • Fixed transform sometimes being left in a bad state after an animation (r244800)


  • Fixed the hit-point of a link that spans multiple lines (r244983)

Web Inspector

  • Updated support for dragging a node to the console to log the node (r244946)
  • Added support for recording actions performed on WebGL 2 contexts (r244908)

Web Driver

  • Used a more informative key to indicate automation availability (r244791)

Web Authentication

  • Added a check to require a call to WebAuthN from a focused document (r244938)


  • Moved gpu API entry point from window to navigator (r244777)

Browser Changes

  • Changed unchecking “Allow websites to ask for permission to send notifications” to also disable prompting for HTML5 notifications