Build Cross-Platform Desktop Apps with Modern JavaScript

Deno Desktop

Hacker News Feature

279 Points

02

Understanding Deno Desktop

A modern approach to desktop application development

What is Deno Desktop?

Deno Desktop enables developers to build cross-platform desktop applications using the Deno runtime—a secure, modern JavaScript and TypeScript environment.

• Secure by default with granular permissions

• TypeScript support out of the box

• Single executable deployment

• Lightweight alternative to Electron

Native performance with web technologies

Core Features

security

Secure by Default

Sandboxed execution with explicit permission grants for file, network, and system access

code

TypeScript Native

First-class TypeScript support without additional configuration or build steps

devices

Cross-Platform

Build for Windows, macOS, and Linux from a single codebase

speed

Lightweight

Minimal bundle sizes and fast startup compared to traditional desktop frameworks

web

WebView Powered

Uses native WebView for rendering, reducing memory footprint significantly

hub

Modern APIs

Access to Web APIs and Deno's comprehensive standard library

05

Why It Matters

Comparing solutions and getting started

Deno Desktop vs Electron

Deno Desktop Lighter
~10-50MB bundle size
Native WebView rendering
Secure permission model
Single executable output
V8 runtime + Rust backend

Electron

~150-200MB bundle size
Bundled Chromium engine
Node.js permission model
Multi-file distribution
V8 runtime + Node.js backend

Build Your First Desktop App

1

Install Deno

One-line installation via shell or PowerShell, no complex setup required

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2

Create Project

Use Deno's project templates to scaffold a desktop application

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3

Write Code

Build your UI with HTML, CSS, JavaScript or TypeScript

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4

Build & Distribute

Compile to a single executable and share across platforms

Thank You

Start building modern desktop apps with Deno today

docs.deno.com/runtime/desktop