Safari Technology Preview Release 54 is now available for download for macOS Sierra and macOS High Sierra.

New WebKit Features in Safari 11.1

Update: This post has been updated to omit Offscreen Canvas which is not available in Safari 11.1 on macOS and Safari on iOS 11.3.

Release Notes for Safari Technology Preview 53

Safari Technology Preview Release 53 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 52 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 51 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 50 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 49 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 48 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 47 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 46 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 45 is now available for download for macOS Sierra and macOS High Sierra.

Safari Technology Preview Release 44 is now available for download for macOS Sierra and macOS High Sierra.