Safari Technology Preview Release 157 is now available for macOS Monterey 12.3 or later and macOS Ventura, Webkit announced. Users who already have Safari Technology Preview installed can update in the Software Update panel of System Preferences in macOS Monterey or in System Settings under General → Software Update in macOS Ventura.
Here are the changes that were made:
Web Inspector
- Elements Tab
- Added support for event breakpoints to be case-insensitive and regular expression matching (255196@main)
- Fixed disabling inline breakpoints unexpectedly removing them (255292@main)
- Fixed inline breakpoints appearing for minified resources before they are pretty-printed (255200@main)
CSS
- Added support for
font-synthesis
longhand properties (255171@main) - Added support for
last baseline
alignment for CSS Grid (255455@main) - Added support for
last baseline
alignment for Flexbox containers (255383@main) - Added support for
lh
andrlh
units (255540@main) - Added margin when computing the baseline position for tables (255357@main)
- Changed outline to follow
border-radius
(255314@main, 255300@main) - Changed to treat
rem
andrlh
as absolute units for font size (255594@main) - Changed to allow the
font-variant-east-asian
shorthand property in any position (255134@main) - Changed to only preserve a scroll snap target if there are targets for both axes (255493@main)
- Changed CSS Keyframe name handling to not allow CSS-wide keywords (255640@main)
- Changed to use
min-intrinsic
size to computemin-content
size for non-replaced flex items (255858@main) - Fixed the
display
property value of a computed style to be"none"
instead of"inline"
for an <audio
> element without controls (255528@main) - Fixed
font-style: oblique
to allow angles equal to90deg
or-90deg
(255875@main) - Fixed
font-weight
to be clamped to 1 as a minimum (255873@main) - Fixed the left-aligned
contentEditable
caret instead of centered when the :before pseudo-element is used (255333@main) - Fixed CSS 3D transform by
matrix3d()
with translations to take page zoom into account (255416@main) - Unprefixed
font-size: -webkit-xxx-large
(255602@main) - Updated
@font-palette-values
override-colors order (255604@main)
Rendering
- Fixed flickering while scrolling when the keyboard scrolling spring damping animation doesn’t finish (255306@main, 255099@main)
JavaScript
- Added support for class static initialization blocks (255173@main)
- Changed the default style of
Intl.DurationFormat
from “digital” to “short” (255255@main) - Fixed
Intl.NumberFormat
ignoringmaximumFractionDigits
with compact notation for currency and decimal (255691@main) - Improved
Object.entries
runtime function performance (255470@main) - Updated useGrouping handling for Intl.NumberFormat (255275@main)
WebCodecs
- Added support for WebCodecs encoder bitrate related parameters (255476@main)
- Added support for WebCodecs video encoder flush (255785@main)
- Added support for WebCodecs Validate VideoFrameInit algorithm (255786@main)
- Added support for WebCodecs VideoFrame allocationSize (255313@main)
- Added support for WebCodecsVideoEncoder (255316@main, 255262@main)
- Added support for WebCodecsVideoDecoder (255215@main, 255138@main)
- Added support for WebCodecs VideoFrame copyTo (255429@main)
- Added support for WebCodecsVideoDecoder with VPx backend (255138@main)
- Added support for AVC H.264 WebCodecsVideoEncoder and WebCodecsVideoDecoder (255430@main, 255422@main)
- Added support for GPU-based WebCodecsVideoDecoder flush (255388@main)
- Added cropping support to WebCodecsVideoFrame copyTo (255716@main)
- Added initial implementation to VideoFrame (255259@main)
- Added support for RGBX and BGRX pixel formats (255390@main)
- Added WebCodecs VideoFrame support for createImageBitmap (255776@main)
- Ensured VPx WebCodecs encoders and decoders are created asynchronously (255478@main)
- Ensured the bitrate and framerate are set for VPx encoders (255666@main)
- Fixed canvas to be able to draw a WebCodecsVideoFrame (255720@main)
- Validated width, height, x and y for I420 and NV12 video frames (255489@main)
Web API
- Added support for CSSNumericValue.toSum() (255679@main)
- Added support for CSSNumericValue.parse() (255791@main)
- Added support for CSSTransformValue.toMatrix (255299@main)
- Added support for EXT_provoking_vertex draft extension (255261@main)
- Added support for the Sec-Fetch-Site header (255810@main)
- Added support for cancel event support on <input type=file> (255394@main)
- Added support for referrerpolicy in link headers (255354@main)
- Added a log channel for IntersectionObserver (255197@main)
- Added the class FilterTargetSwitcher (255802@main)
- Changed to fire an error event when CSP blocks inline stylesheets (255744@main)
- Changed to fire an error event when link preload fails synchronously (255740@main)
- Fixed CSSPerspective.toMatrix() to throw an exception if its length is not compatible with a px unit (255876@main)
- Fixed CSSTransformComponent.toMatrix() to flatten to two-dimenions if necessary (255290@main)
- Fixed headers iteration to not happen on the cached headers list (255639@main)
- Made onpointerlockchange and onpointerlockerror enumerable (255153@main)
- Updated ResizeObserver and IntersectionObserver timing to match other browsers (255132@main)
Media
- Accept image/jpg for compatibility (255268@main)
- Changed to enforce Low Power Mode and Optimize Video Streaming setting by tone mapping HDR video to SDR (255127@main)
- Changed sizing of video element to use width and height HTML attributes to calculatche a natural aspect ratio before the video file loads (255743@main)
- Changed to switch to an alternate <source> element for AirPlay when necessary (255624@main)
- Fixed the display able to go to sleep when the camera is on (255636@main)
Web Animations
- Fixed Animation.commitStyles() triggering a mutation even when the styles are unchanged (255129@main)
- Fixed updating timing to invalidate the effect (255863@main)
- Updated to account for iterationComposite when blending (255834@main)
HTML
- Added the display of a thumbnail of selected file for <input type=file> on macOS (255355@main)
Accessibility
- Fixed accessibility for the <meter> and <progress> elements when -webkit-appearance: none or appearance: none is set (255836@main)
- Fixed accessibility to not limit navigation when focus is explicitly moved outside of a modal (255665@main)
- Fixed a bug causing VoiceOver to double-read list markers and not output braille for list items (255276@main)
Security
- Fixed Cross-Origin-Embedder-Policy incorrectly blocking scripts on a cache hit (255302@main)
Privacy
- Capped cookie lifetimes to 7 days for responses from third-party IP addresses (255849@main)
- Omitted document.referrer for third-party requests while in ephemeral mode (255649@main)
Safari Web Extensions
- Added support for the modifyHeaders action type in Declarative Net Request rules
- Fixed Declarative Net Request rules not loading after an extension was turned off and then back on