# Safari Technology Preview 168 Release Notes Learn about the latest web technology updates in Safari Technology Preview: Web Inspector, CSS, Rendering, Web Animations, JavaScript, Lockdown Mode, Media, Popover, Web API, and Accessibility. ## Overview [Safari Technology Preview](https://webkit.org/blog/6017/introducing-safari-technology-preview/) Release 168 is now [available for download](https://webkit.org/downloads/) for macOS Monterey 12.3 or later and macOS Ventura. If you already have Safari Technology Preview installed, you can update it in the Software Update pane of System Preferences on macOS Monterey, or System Settings under General → Software Update on macOS Ventura. This release includes WebKit changes between: [262125@main…262761@main](https://github.com/WebKit/WebKit/compare/c7e72788869f05768c12200a95f59020a78c420d...cc0701ad6d8c29f5b0469b2ca944818f5856d538). ### Web Inspector - Network tab - Fixed cleared items reappearing with Preserve Log enabled ([262603@main](https://commits.webkit.org/262603@main)) - Sources tab - Fixed unresponsiveness after inspecting photos ([262409@main](https://commits.webkit.org/262409@main)) - Graphics tab - Added support for OffscreenCanvas in Canvas related operations ([262388@main](https://commits.webkit.org/262388@main)) ### CSS - Added CSS Nesting serialization support for CSSOM ([262177@main](https://commits.webkit.org/262177@main)) - Added support for `@supports font-format()` ([262305@main](https://commits.webkit.org/262305@main)) - Implemented two-value syntax of `font-size-adjust` ([262309@main](https://commits.webkit.org/262309@main), [262374@main](https://commits.webkit.org/262374@main)) - Implemented CSSOM `insertRule()` on StyleRule ([262394@main](https://commits.webkit.org/262394@main)) - Fixed `color()` function parsing to reject missing components ([262098@main](https://commits.webkit.org/262098@main)) - Fixed to not show `cursor: pointer` on unclickable `` ([262559@main](https://commits.webkit.org/262559@main)) - Fixed UA styles incorrectly applying to elements with other namespaces such as SVG ([262053@main](https://commits.webkit.org/262053@main)) - Fixed hit testing for an `::after` with `transform-style: preserve-3d` and a negative `z-index` ([262728@main](https://commits.webkit.org/262728@main)) - Fixed `content: counter()` not updating visually if `position: absolute` is set ([262269@main](https://commits.webkit.org/262269@main)) - Fixed unknown function parsing in `@supports` rule ([262308@main](https://commits.webkit.org/262308@main)) - Fixed `@counter-style` to stop allowing redefining certain predefined styles ([262038@main](https://commits.webkit.org/262038@main)) - Fixed `@counter-style` `extends` system to always extend first symbol for fixed system ([262264@main](https://commits.webkit.org/262264@main)) - Fixed triggering layout on `margin-trim` style change ([262423@main](https://commits.webkit.org/262423@main)) - Fixed trimmed `block-start`, `block-end`, `inline-start`, and `inline-end` margins for flex items in horizontal writing mode to reflect in computed style ([262700@main](https://commits.webkit.org/262700@main), [262081@main](https://commits.webkit.org/262081@main), [262663@main](https://commits.webkit.org/262663@main), [262708@main](https://commits.webkit.org/262708@main)) ### Rendering - Fixed statically positioned out-of-flow box location when display type changes from `block` to `inline-block` ([262042@main](https://commits.webkit.org/262042@main)) - Fixed incorrectly positioned out-of-flow box when a layout boundary is present ([262470@main](https://commits.webkit.org/262470@main)) - Fixed siblings layout if an adjacent float no longer affects them ([262481@main](https://commits.webkit.org/262481@main)) - Fixed `vertical-align` correctness ([262506@main](https://commits.webkit.org/262506@main)) - Fixed MathML element in `display: flex` not getting repainted on a content change ([262674@main](https://commits.webkit.org/262674@main)) - Fixed statically positioned out-of-flow box with anonymous sibling flex item inside `display: flex` ([262341@main](https://commits.webkit.org/262341@main)) ### Web Animations - Fixed first frame of transform animation visible when `!important` style overrides the animated value ([262327@main](https://commits.webkit.org/262327@main)) ### JavaScript - Added ImplementationVisibility to `Wasm::Callee` ([262191@main](https://commits.webkit.org/262191@main)) - Aligned RegExp V Flags Syntax errors with V8 ([262017@main](https://commits.webkit.org/262017@main)) - Applied the new display computation for digital in `Intl.DurationFormat` ([262682@main](https://commits.webkit.org/262682@main)) - Fixed Paren Context allocation and use with Duplicate Named Capture groups ([262239@main](https://commits.webkit.org/262239@main)) ### Lockdown Mode - Disabled the Web Codecs API ([262653@main](https://commits.webkit.org/262653@main)) ### Media - Fixed videos not playing if opened in full screen on first play ([262654@main](https://commits.webkit.org/262654@main)) ### Popover - Fixed `event.preventDefault()` to not cancel popover light dismiss ([262283@main](https://commits.webkit.org/262283@main)) - Fixed changing `popover` attribute during `beforetoggle` when showing a popover to throw an exception ([262026@main](https://commits.webkit.org/262026@main)) - Implemented “check and possibly close popover stack” algorithm ([262440@main](https://commits.webkit.org/262440@main)) ### Web API - Implemented `URL.canParse()` ([262072@main](https://commits.webkit.org/262072@main)) - Fixed HTML Comments after `` placed at the bottom of the `` contents ([262222@main](https://commits.webkit.org/262222@main)) - Fixed innerHTML escaping `<`, `>`, `&`, and `nbsp` inside `noembed`, `noframes`, `iframe` and `plaintext` ([262285@main](https://commits.webkit.org/262285@main)) - Fixed innerHTML serialization to not have a special handling for `javascript:` URLs ([262267@main](https://commits.webkit.org/262267@main)) - Fixed sliced blobs ending up with the wrong `Content-Type` in Fetch ([262583@main](https://commits.webkit.org/262583@main)) - Fixed Offscreen Canvas not respecting size set via CSS ([262039@main](https://commits.webkit.org/262039@main)) - Fixed smooth keyboard scrolling with Page Up and Page Down ([262466@main](https://commits.webkit.org/262466@main)) ### Accessibility - Changed to not include the password input value in `aria-labelledby` description ([262433@main](https://commits.webkit.org/262433@main)) - Fixed `aria-owns` attribute for the radio role ([262566@main](https://commits.webkit.org/262566@main)) - Fixed VoiceOver not reading entered text in text fields ([262126@main](https://commits.webkit.org/262126@main)) --- Copyright © 2026 Apple Inc. 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