---
title: Safari Technology Preview 204 Release Notes
framework: safari-technology-preview-release-notes
role: article
role_heading: Article
path: safari-technology-preview-release-notes/stp-release-204
---

# Safari Technology Preview 204 Release Notes

Learn about the latest web technology updates in Safari Technology Preview: Accessibility, CSS, Forms, JavaScript, Service Workers, Web API, Web Driver, Web Extensions, and Web Inspector.

## Overview

Overview Safari Technology Preview Release 204 is now available for download for macOS Sequoia beta and macOS Sonoma. 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: 283043@main…283691@main. Accessibility Resolved Issues Fixed VoiceOver focus to activate PDF form fields when it lands on them. (283281@main)  (134522935) CSS New Features Added support for cross-document view-transitions. (283320@main)  (133994557) Added preview support for line-clamp. (283233@main)  (135369594) Resolved Issues Fixed text-decoration-thickness to work in buttons. (283212@main)  (118320835) Fixed skipping view transitions on hidden pages. (283084@main)  (125017653) Fixed contrast between ButtonFace and ButtonText system colors in dark mode. (283284@main)  (131996608) Forms Resolved Issues Fixed HTMLSelectElement.prototype.add with optgroup elements. (283080@main)  (120553757) JavaScript Resolved Issues Fixed: Improved the TypeError message when a WeakMap constructor takes an iterable that yields invalid entry. (283199@main)  (135333331) Fixed incorrect SyntaxError when destructuring let. (283217@main)  (135353378) Deprecations Removed obsoleted methods for Temporal.PlainTime and Temporal.PlainDateTime to align with specification changes. (283315@main)  (135509670) Service Workers Resolved Issues Fixed Service Workers to support focusing a page that is being loaded. (283263@main)  (135337772) Web API New Features Added support for the Cookie Store API. (283654@main)  (135969444) Resolved Issues Fixed scrollIntoView(...) for SVG elements. (283157@main)  (135265918) Web Driver Resolved Issues Fixed Web Driver to use pointer origin rather than viewport origin for state location resolution. (283186@main)  (128668986) Web Extensions New Features Added support for icon_variants in Web Extensions. (283118@main, 283219@main)  (134885372) Resolved Issues Fixed blob URL downloads failing to trigger from an extension. (283220@main)  (78929424) Fixed including the extension’s icon in the commands menu item and prevented customization using System Settings. (283229@main)  (135360504) Web Inspector Resolved Issues Fixed an issue where multi-line content in the Console prompt was not scrollable. (283412@main)  (131756916)

## See Also

### 2024

- [Safari Technology Preview 210 Release Notes](safari-technology-preview-release-notes/stp-release-210.md)
- [Safari Technology Preview 209 Release Notes](safari-technology-preview-release-notes/stp-release-209.md)
- [Safari Technology Preview 208 Release Notes](safari-technology-preview-release-notes/stp-release-208.md)
- [Safari Technology Preview 207 Release Notes](safari-technology-preview-release-notes/stp-release-207.md)
- [Safari Technology Preview 206 Release Notes](safari-technology-preview-release-notes/stp-release-206.md)
- [Safari Technology Preview 205 Release Notes](safari-technology-preview-release-notes/stp-release-205.md)
- [Safari Technology Preview 203 Release Notes](safari-technology-preview-release-notes/stp-release-203.md)
- [Safari Technology Preview 202 Release Notes](safari-technology-preview-release-notes/stp-release-202.md)
- [Safari Technology Preview 201 Release Notes](safari-technology-preview-release-notes/stp-release-201.md)
- [Safari Technology Preview 200 Release Notes](safari-technology-preview-release-notes/stp-release-200.md)
- [Safari Technology Preview 199 Release Notes](safari-technology-preview-release-notes/stp-release-199.md)
- [Safari Technology Preview 198 Release Notes](safari-technology-preview-release-notes/stp-release-198.md)
- [Safari Technology Preview 197 Release Notes](safari-technology-preview-release-notes/stp-release-197.md)
- [Safari Technology Preview 196 Release Notes](safari-technology-preview-release-notes/stp-release-196.md)
- [Safari Technology Preview 195 Release Notes](safari-technology-preview-release-notes/stp-release-195.md)