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How Rust Targets WebAssembly: Inside the wasm32 Backend: Revision history

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15 November 2025

  • curprev 16:4216:42, 15 November 2025 PC talk contribs 11,394 bytes +11,394 Created page with "You’ve probably seen it before: “Compile Rust to WebAssembly and run it in the browser.” Sounds magical, right?
You cargo build --target wasm32-unknown-unknown, and suddenly your Rust code is running inside Chrome’s JavaScript engine. But what really happens between those two steps?
 How does Rust — a systems language that talks directly to hardware — suddenly become a safe sandboxed bytecode that the browser can execute? Let’s lift the curtain.
..."
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