21CTO

Sep 20, 2025 · Frontend Development

What’s New in WebAssembly 3.0? Exploring the Latest Features and Their Impact

WebAssembly 3.0, now the “live” standard, introduces 64‑bit address space, multi‑memory support, garbage collection, richer reference types, tail calls, exception handling, relaxed SIMD, and deterministic defaults, enabling larger applications, better language support, and broader browser adoption across Chrome, Firefox, Safari, and Wasmtime.