Features
- File-based routing with layouts and error boundaries
- Server-side rendering with streaming
- Form actions for progressive enhancement
- Adapter system for deploying anywhere
- Built-in data loading with type-safe load functions
Pros
- Excellent progressive enhancement story
- Smallest bundle sizes among meta-frameworks
- Clean data loading pattern with load functions
- Works without JavaScript enabled
Cons
- Smaller ecosystem than Next.js or Nuxt
- Fewer deployment adapters than some alternatives
- Learning Svelte-specific patterns required
Overview
SvelteKit is the official application framework for Svelte, providing everything you need to build production-grade web applications. It handles routing, server-side rendering, data loading, form handling, and deployment — all while maintaining Svelte’s philosophy of minimal overhead and excellent developer experience.
SvelteKit’s architecture is built around progressive enhancement. Form actions work without JavaScript, pages can be server-rendered or pre-rendered, and client-side navigation enhances the experience when JavaScript is available. The adapter system lets you deploy to any platform — Node.js, serverless functions, edge runtimes, or static hosting.
When to Use
SvelteKit is the default choice for any Svelte project. It’s particularly strong for content-heavy sites, applications that need progressive enhancement, and projects where performance and small bundle sizes are priorities. Its form actions make it excellent for CRUD applications.
Getting Started
npx sv create my-app
cd my-app && npm install && npm run dev<!-- src/routes/+page.svelte -->
<script>
let { data } = $props();
</script>
<h1>Welcome, {data.user.name}!</h1>