Apple has released Safari Technology Preview 185, the latest version of their developer preview web browser. The preview version of Apple’s popular browser offers developers and other interested users the ability to try out features that may or may not, debut in future public release versions of Safari.
Safari Technology Preview 185 includes fixes and updates for Accessibility, CSS, Media, Rendering, Web API, Web Inspector, WebAuthn, and WebGPU.
The current Safari Technology Preview release is compatible with machines running macOS Ventura and macOS Sonoma.
Overview
Safari Technology Preview Release 185 is now available for download for macOS Sonoma and macOS Ventura. If you already have Safari Technology Preview installed, you can update it in System Settings under General → Software Update.
This release includes WebKit changes between: 271111@main…271831@main.
Accessibility
Resolved Issues
- Fixed: Removed the default ARIA-level heading for a heading role, matching removal from ARIA specifications. (271497@main) (119059172)
CSS
New Features
- Added support for
align-contenton block containers. (271818@main) (114740670)- Added percentage values support for
letter-spacingandword-spacing. (271357@main) (116562262)- Added support for scroll anchoring with
overflow-anchor. (271790@main) (118365809)- Added support for
@scope. (271670@main) (119261250)Resolved Issues
- Fixed CSS counters to update properly on style changes. (271451@main) (109416780)
- Fixed: Updated Full Size Kana table to Unicode 15. (271276@main) (111508663)
- Fixed missing user-agent stylesheet rules for MathML fractions. (271337@main) (116922348)
- Fixed selection gaps to get painted with the expected
::pseudo-element color. (271129@main) (117796745)selection - Fixed
::to be allowed afterbackdrop ::. (271366@main) (119015204)slotted() - Fixed: Removed support for special first track handling to align with the evolving Masonry standard. (271757@main) (119041053)
Media
New Features
- Added WebCodecs VP9 profile 2 support. (271238@main) (118879753)
Resolved Issues
- Fixed an HEVC decoder issue when translating annexb data. (271728@main) (116768196)
- Fixed AV1-in-MP4 codec string not shown in Show Media Stats. (271187@main) (118850797)
- Fixed
getDisplay Media framealways at 30 regardless of constraints. (271233@main) (118874132)Rate - Fixed to not loop if current time or duration is zero. (271256@main) (118902468)
- Fixed in-band captions wrapping unnecessarily. (271415@main) (119024855)
Rendering
Resolved Issues
- Fixed: Removed the
<font>text-decorationcolor override quirk. (271338@main) (102920597)- Fixed shadow invalidation issue in
vertical-rlmode. (271416@main) (111915460)- Fixed text in flex items not breaking under specific conditions. (271122@main) (118796634)
Web API
New Features
- Added
Element,.prototype .set HTMLUnsafe() Shadow, andRoot .prototype .set HTMLUnsafe() Documentmethods. (271423@main) (115345128).parse HTMLUnsafe() Resolved Issues
- Fixed updating
resizeandBy resizeto useTo intrather thanfloatto align with specifications. (271194@main) (118872048)- Fixed the CookieChangeEvent to not be exposed when the Cookie Store API is disabled. (271243@main) (118902989)
- Fixed
<progress>to use the page’s preferred rendering update interval. (271431@main) (118976548)- Fixed
Elementto not treat attribute names case insensitively. (271363@main) (119013600).prototype .set Attribute Node() - Fixed WebGL OffscreenCanvas returning the previously created WebGL1 context when asking for WebGL2. (271546@main) (119028794)
- Fixed to allow
:andchecked :to match at the same time. (271430@main) (119075969)indeterminate Web Inspector
New Features
- Expanded OffscreenCanvas support for
bitmaprenderer,webgl, andwebgl2. (271300@main) (109594232)- Added Grid overlay support for Masonry layout. (271332@main) (118833618)
WebAuthn
New Features
- Added support for
get. (271584@main) (119058559)Client Capabilities() WebGPU
New Features
- Enabled WebGPU to be testable via the Develop menu. (271725@main) (119262908)
While the preview is intended for use by developers and advanced users, to provide Apple with feedback on the development of the Safari browser, it can be run side-by-side with the release version of Safari. The app doesn’t require a developer account to download and install. For more information, visit the Safari Technology Preview website.
