Install Swift 6.2 (or later version) and a corresponding Swift SDK for Wasm by following "Getting Started with Swift SDKs for WebAssembly" article.
Build with the installed Swift SDK using JavaScriptKit's PackageToJSPlugin plugin. Make sure to update
the Swift SDK in the following command to the version that matches your installed Swift toolchain.
swift package --swift-sdk swift-6.2-RELEASE_wasm js --use-cdn
WebGPU is enabled by default in Safari 26. Safari 17 and 18 require enabling WebGPU feature flag as shown on the screenshot:
See the WebGPU Implementation Status page for information about compatibility with other browsers.
Start an HTTP server that hosts the Wasm binary and other assets included in the project, e.g. you can use python3 -m http.server or npx serve, then open
http://localhost:8000 for python3 or http://localhost:3000 for npx serve to view the Swift logo rendered using WebGPU.
Note
When using an editor with SourceKit-LSP, update .sourcekit-lsp/config.json with the
Swift SDK used in your build command.