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WebAssembly Guide 2026: Running Native Code in the Browser with Rust and WASI

WebAssembly Is Production-Ready

WebAssembly (Wasm) has graduated from "promising technology" to "runs in every major browser and beyond." In 2026, Wasm powers Figma's design canvas, Photoshop on the web, 1Password's encryption, and Cloudflare Workers. It lets you run near-native performance code in the browser — written in Rust, C, C++, Go, or Zig — alongside your JavaScript.…