SvelteKit

SvelteKit is the full-stack framework for Svelte. It handles routing, server-side rendering, API endpoints, and deployment - similar to what Next.js does for React. Current line: Svelte 5.57, SvelteKit 3.0 (2026-10).

Overview

• What: Full-stack web framework built on Svelte and Vite
• Install: npx sv create my-app
• Routing: Filesystem-based (src/routes/)
• Rendering: SSR by default, configurable per-route (SSR, SPA, prerender)
• API: Server endpoints via +server.ts files
• Deploy: Adapters for Vercel, Netlify, Cloudflare, Node, static sites

Contents

• Concepts - How SvelteKit works
  • Routing - Filesystem routing, layouts, params
  • Loading Data - Load functions, server vs universal
  • Remote Functions - Experimental query/form/prerender primitives (2026)
  • Prerendering and Caching - Page options, prerender ‘auto’, the ISR-replacement mapping
  • Hooks - handle, handleError, response transforms
• Quickstart - Get started
  • First App - Create and run a SvelteKit project
• How-To - Deployment and integration
  • Deploy with adapter-node in Docker - Standalone Node server, env vars, reverse proxy setup
  • Deploy to Cloudflare - adapter-cloudflare, bindings, platformProxy
• Notes - Version notes
  • Kit 3 Changes - What changed from SvelteKit 2, config move, migration

Resources

• SvelteKit docs
• Svelte tutorial