Is the Svelte playground free?

Yes. The Svelte playground is completely free with no sign-up — write, run and share Svelte code in your browser.

Do I need to install anything to run Svelte online?

No. The live preview compiles and runs in your browser. After downloading the project, install its dependencies before running it locally.

Can I share or export my Svelte code?

Yes. Share creates a link to your project. Download exports a Vite project ZIP with its source files and package.json.

Does the editor support autocomplete and live preview?

It does — a Monaco-powered editor with autocomplete and formatting, a live preview that updates as you type, and a console for logs and errors.

Svelte Playground - Online Editor with Live Preview

src/App.svelte

localhost:5173

Svelte 5ReadySVELTELn 1, Col 1

Svelte — guide & examples

Online Svelte playground with live preview, reactive components, and Svelte syntax. Build and test Svelte applications directly in your browser.

About Svelte

Online Svelte playground with live preview, reactive components, and Svelte syntax. Build and test Svelte applications directly in your browser.

Runtime: v5.56.8

Features

Svelte Components
Reactive Statements
Template Syntax
Live Preview
Event Handling
State Management
Svelte Stores

Browser playground limits

• Code runs in a sandboxed browser preview, without Node.js, a backend, or private environment variables.
• The Console prompt can inspect browser globals and the rendered DOM, but not variables scoped inside ES modules or component state.
• Download the project when you need build plugins, server APIs, native modules, or a production dependency workflow.

src/main.ts

import { mount } from 'svelte'
import App from './App.svelte'
import './styles.css'

const target = document.getElementById('app')

if (!target) {
  throw new Error('App target was not found')
}

mount(App, { target })

src/App.svelte

<script lang="ts">
  import CounterCard from './components/CounterCard.svelte'

  let count = $state(0)
</script>

<main class="app-shell">
  <p class="eyebrow">Svelte 5 · Runes + TypeScript</p>
  <h1>Build with real .svelte files</h1>
  <p class="intro">
    This playground compiles runes, TypeScript, scoped styles, and local
    component imports directly in your browser.
  </p>

  <CounterCard {count} onIncrement={() => count += 1} />
</main>

<style>
  .app-shell {
    width: min(680px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 5rem 0;
  }

  .eyebrow {
    margin: 0 0 0.75rem;
    color: #c83200;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  h1 {
    margin: 0;
    color: #3b2018;
    font-size: clamp(2.25rem, 7vw, 4.5rem);
    line-height: 0.98;
    letter-spacing: -0.055em;
  }

  .intro {
    max-width: 58ch;
    margin: 1.25rem 0 2rem;
    color: #765f58;
    line-height: 1.7;
  }
</style>

compilebytes.com/tools/svelte

Svelte Playground

Svelte — guide & examples

About Svelte

Features

Browser playground limits

How to use the Svelte playground

Execution

Editing

Navigation

Selection

Terminal

Console shortcuts

Frequently asked questions