# Safari Technology Preview 182 Release Notes Learn about the latest web technology updates in Safari Technology Preview: CSS, Forms, HTML, JavaScript, Loading, Media, Rendering, Scrolling, Storage, SVG, Text, Web API, Web Assembly, Web Inspector, and WebRTC. ## Overview [Safari Technology Preview](https://webkit.org/blog/6017/introducing-safari-technology-preview/) Release 182 is now [available for download](https://developer.apple.com/safari/resources/) 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: [269058@main…269633@main](https://github.com/WebKit/WebKit/compare/e21786e1635702a6ca7c1e30290f32e8a97fec23...91adc5e2412ce1d92a3271e5bc983618cb2aabba) ### CSS #### New Features - Added the `white-space-collapse` and `text-wrap-mode` CSS properties. ([269613@main](https://commits.webkit.org/269613@main)) (117248327) #### Resolved Issues - Fixed animating a `rotate` property when the `scale` property is also used. ([269453@main](https://commits.webkit.org/269453@main)) (113999490) - Fixed `getComputedStyle()` to return a resolved value for `font-size-adjust: from-font`. ([269084@main](https://commits.webkit.org/269084@main)) (116151111) - Fixed subgrids to have their row-start margins resolved after column sizing in the outer grid. ([269424@main](https://commits.webkit.org/269424@main)) (116369419) - Fixed forced layout on absolutely positioned elements for `content-visibility`. ([268840@main](https://commits.webkit.org/268840@main)) (116453903) - Fixed validating `@property` at parse-time. ([269466@main](https://commits.webkit.org/269466@main)) (116803886) - Fixed `background-blend-mode` property to return a comma-separated list. ([26932@main](https://commits.webkit.org/26932@main)) (116838342) - Fixed `content-visibility` to take forced layout into account for absolute positioned grid items. ([269531@main](https://commits.webkit.org/269531@main)) (117214848) - Fixed `@supports selector(:popover-open)` to reflect disabled state. ([269565@main](https://commits.webkit.org/269565@main)) (117226626) ### Forms #### New Features - Added support for the `showPicker()` method for ``. ([269257@main](https://commits.webkit.org/269257@main)) (110099910) ### HTML #### New Features - Added support for the list of available images for lazy loaded images. ([269243@main](https://commits.webkit.org/269243@main)) (98788086) #### Resolved Issues - Fixed strictly enforcing exclusivity for the `

` element `name` attribute. ([269127@main](https://commits.webkit.org/269127@main)) (116463466) ### JavaScript #### New Features - Added `TimeZoneOffset` format support to `Intl.DateTimeFormat`. ([269497@main](https://commits.webkit.org/269497@main)) (117124296) #### Resolved Issues - Fixed `Map.groupBy` and `Object.groupBy` callback arguments. ([269456@main](https://commits.webkit.org/269456@main)) (117120234) - Fixed `Intl.Collator`’s `ignorePunctuation` to reflect the queried result. ([269459@main](https://commits.webkit.org/269459@main)) (117122647) - Fixed `Intl.NumberFormat` and `Intl.PluralRules` with updated property access ordering and resolvedOptions key ordering. ([269501@main](https://commits.webkit.org/269501@main)) (117181500) ### Loading #### Resolved Issues - Fixed navigation to about scheme URLs without opaque paths. ([269423@main](https://commits.webkit.org/269423@main)) (116238322) ### Media #### New Features - Added support for H264 L1T2 for WebCodecs. ([269297@main](https://commits.webkit.org/269297@main)) (114940765) #### Resolved Issues - Fixed WebVTT regions to position according to specifications. ([268787@main](https://commits.webkit.org/268787@main)) (23091897) (FB5414788) - Fixed an issue where Safari would briefly change `document.visibilityState` to `hidden` when entering fullscreen. ([269150@main](https://commits.webkit.org/269150@main)) (104984915) - Fixed pausing MediaRecorder continuing to call `ondataavailable` at every timeslice event. ([268433@main](https://commits.webkit.org/268433@main)) (115979604) - Fixed the close algorithms for audio and video WebCodec decoders and encoders to match specification changes. ([268781@main](https://commits.webkit.org/268781@main)) (116346725) - Fixed picture-in-picture when the `srcObject` is a video stream. ([269403@main](https://commits.webkit.org/269403@main)) (116465668) - Fixed constraints on the maximum width or height causing blurry `getDisplayMedia` video. ([269406@main](https://commits.webkit.org/269406@main)) (116810370) - Fixed `object-fit: fill` to work for a video element using a canvas stream `srcObject`. ([269568@main](https://commits.webkit.org/269568@main)) (116832514) - Fixed the limit for the number of real-time audio threads. ([269291@main](https://commits.webkit.org/269291@main)) (116864442) ### Rendering #### Resolved Issues - Fixed ignoring `calc()` values on `` elements. ([269200@main](https://commits.webkit.org/269200@main)) (106692191) - Fixed ancestor subgrids’ gutters to add to the extra layer of margin for descendant subgrids. ([269194@main](https://commits.webkit.org/269194@main)) (114271857) ### Scrolling #### Resolved Issues - Fixed clicking and dragging the overlay scrollbar that overlaps a composited, positioned descendant of a container with `overflow: scroll`. ([269255@main](https://commits.webkit.org/269255@main)) (89598421) - Fixed a bug that caused some complicated websites to freeze when scrolling. ([269486@main](https://commits.webkit.org/269486@main)) (113318934) ### Storage #### New Features - Added support for blob partitioning. ([269264@main](https://commits.webkit.org/269264@main)) (116813727) ### SVG #### Resolved Issues - Fixed ellipse hit testing in the non-circle case. ([269554@main](https://commits.webkit.org/269554@main)) (103756227) - Fixed to compute `stroke-bounding-box` lazily. ([269351@main](https://commits.webkit.org/269351@main)) (116852041) - Fixed approximate stroke-bounding-box computation for repainting. ([269492@main](https://commits.webkit.org/269492@main)) (116999242) - Fixed repainting an SVG element with a CSS reference filter when the filter changes. ([269413@main](https://commits.webkit.org/269413@main)) (117047658) ### Text #### Resolved Issues - Fixed font fallback to ignore generic families for Private-Use Area Unicode codepoints. ([269524@main](https://commits.webkit.org/269524@main)) (115901340) (FB13197885) ### Web API #### Resolved Issues - Fixed the result of `Range.getClientRects()` and `Range.getBoundingRect()` for certain ranges. ([269271@main](https://commits.webkit.org/269271@main)) (112543805) - Fixed audio elements with event listeners not getting garbage collected. ([269165@main](https://commits.webkit.org/269165@main)) (116347723) - Fixed mouse event handling such that if a drag operation is initiated from a canceled `mousedown` event, all subsequent mouse events are sent to the originating frame until the drag operation ends with a corresponding `mouseup` event. ([269370@main](https://commits.webkit.org/269370@main)) (116668701) - Fixed `FetchResponse.formData()` to parse headers names as case insensitive. ([269144@main](https://commits.webkit.org/269144@main)) (116742000) - Fixed light dismiss for a popover element within a complex shadow DOM breaks light dismiss calculation. ([269596@main](https://commits.webkit.org/269596@main)) (117214343) ### Web Assembly #### New Features - Added support for new constant expressions. ([269484@main](https://commits.webkit.org/269484@main)) (107680283) #### Resolved Issues - Fixed WebAssembly SIMD vectors that can get corrupted when using `v128.any_true`. ([269080@main](https://commits.webkit.org/269080@main)) (111050621) - Fixed: Adopted final opcodes for Wasm-GC proposal. ([269454@main](https://commits.webkit.org/269454@main)) (117118851) ### Web Inspector #### New Features - Added support for logging a message to the Console when a page attempts to load a font URL blocked by Lockdown Mode. ([269238@main](https://commits.webkit.org/269238@main)) (114657783) ### WebRTC #### Resolved Issues - Fixed long delays switching audio input in video conferencing applications. ([269242@main](https://commits.webkit.org/269242@main)) (102724364) --- Copyright © 2026 Apple Inc. 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