Node.js Tech Stack

Jul 29, 2026 · Backend Development

Deno’s Big Shift: QuickJS Replaces V8, Cutting Compile Size by Almost 45%

Deno’s founder Ryan Dahl reveals that swapping the long‑used V8 engine for QuickJS reduces the size of a compiled Hello‑World binary from about 65 MiB to roughly 35.6 MiB—a 45 % reduction—while introducing an experimental engine option that brings new trade‑offs in compatibility, performance, and cross‑platform support.