WebKit Bugzilla

Safari Technology Preview Release 249 is now available for download for macOS Golden Gate and macOS Tahoe. If you already have Safari Technology Preview installed, you can update it in System Settings under General Software Update. This release includes W

Safari 26.6 is here. This release adds a small refinement to WebAssembly's streaming compilation paths, and delivers eight bug fixes across CSS, service workers, networking, extensions, and WebRTC. This release continues the ongoing focus of this entire y

Safari Technology Preview Release 248 is now available for download for macOS Golden Gate and macOS Tahoe. If you already have Safari Technology Preview installed, you can update it in System Settings under General Software Update. This release includes W

Update: In Safari 27 beta and Safari Technology Preview 247, we're introducing the Safari MCP server - a Model Context Protocol server for web developers that makes your web development and debugging workflow faster and more powerful. We know agents are i

Safari Technology Preview Release 247 is now available for download for macOS Golden Gate and macOS Tahoe. If you already have Safari Technology Preview installed, you can update it in System Settings under General Software Update. This release includes W

Safari Technology Preview Release 246 is now available for download for macOS Golden Gate and macOS Tahoe. If you already have Safari Technology Preview installed, you can update it in System Settings under General Software Update. This release includes W

Customizable select is coming to Safari 27. With this technology, developers can fully control the appearance of elements - custom arrows, option layouts, color swatches, icons, full visual styling - without the need for JavaScript libraries or an endless

This week, we launched the Field Guide to Grid Lanes at gridlanes.webkit.org. If you ever bookmarked the CSS Tricks Complete Guide to Flexbox, HTML5 Rocks, or CSS Zen Garden, a guide like this might feel familiar. It's designed to be an easy introduction,

MapKit JS allows you to bring the power and simplicity of Apple Maps to your website or web app. Whether you're building a store locator, a travel planner, or a companion web experience for a native app, MapKit JS offers you a robust, privacy-first framew