--- title: News from WWDC26: WebKit in Safari 27 beta | daily.dev description: Safari 27 beta launches with 58 new features and 525 bug fixes — the largest fix count in recent Safari history. Key highlights include customizable <select>... canonical: https://daily.dev/posts/news-from-wwdc26-webkit-in-safari-27-beta-cz81svuy5 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: News from WWDC26: WebKit in Safari 27 beta | daily.dev og:description: Safari 27 beta launches with 58 new features and 525 bug fixes — the largest fix count in recent Safari history. Key highlights include customizable <select>... og:url: https://daily.dev/posts/news-from-wwdc26-webkit-in-safari-27-beta-cz81svuy5 og:image: https://api.daily.dev/og/posts/Cz81sVUy5.png og:image:alt: News from WWDC26: WebKit in Safari 27 beta og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # News from WWDC26: WebKit in Safari 27 beta **[WebKit](https://daily.dev/sources/webkit)** · 63 min read · 12 upvotes · 1 comments ## Summary Safari 27 beta launches with 58 new features and 525 bug fixes — the largest fix count in recent Safari history. Key highlights include customizable elements via `appearance: base-select`, scroll anchoring to prevent viewport jumps, WebAssembly JavaScript Promise Integration (JSPI) for async interop, transform-aware anchor positioning, new CSS keywords (:heading, revert-rule, stretch), a full rewrite of the ESM loader fixing top-level await bugs, and the HTML element expanding to iOS/iPadOS/macOS. The release emphasizes standards alignment, cross-browser compatibility, and quality improvements across CSS layout, SVG, JavaScript, MathML, and media APIs. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@allinonetools** · 2 upvotes > The ESM loader rewrite and 525 bug fixes are bigger wins than most flashy features. As a developer, fewer browser quirks is always good news. ## Similar posts on daily.dev - [Web Technology Sessions at WWDC26](https://daily.dev/posts/web-technology-sessions-at-wwdc26-stxxnbso1) · WebKit · 37 upvotes · 2 comments - [WebKit Features in Safari 26.0](https://daily.dev/posts/webkit-features-in-safari-26-0-bwpkxmges) · WebKit · 0 upvotes · 0 comments - [Issue \#745: Safari's 58 new features — Frontend Focus](https://daily.dev/posts/issue-745-safari-s-58-new-features-frontend-focus-4cvtdr1ox) · Frontend Focus · 3 upvotes · 0 comments - [Release Notes for Safari Technology Preview 238](https://daily.dev/posts/release-notes-for-safari-technology-preview-238-nui8ncsfj) · WebKit · 0 upvotes · 0 comments --- Tags: [#javascript](https://daily.dev/tags/javascript), [#css](https://daily.dev/tags/css), [#webassembly](https://daily.dev/tags/webassembly), [#safari](https://daily.dev/tags/safari) [View this post on daily.dev](https://daily.dev/posts/news-from-wwdc26-webkit-in-safari-27-beta-cz81svuy5) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"News from WWDC26: WebKit in Safari 27 beta","url":"https://daily.dev/posts/news-from-wwdc26-webkit-in-safari-27-beta-cz81svuy5","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/news-from-wwdc26-webkit-in-safari-27-beta-cz81svuy5"},"datePublished":"2026-06-08T19:40:55.218Z","dateModified":"2026-06-08T19:59:42.428Z","description":"Safari 27 beta launches with 58 new features and 525 bug fixes — the largest fix count in recent Safari history. 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