The full-stack framework for Svelte — file-based routing, server functions, and form actions, with a build that ships zero runtime by default.
SvelteKit is the official full-stack framework for Svelte, the compiler-first UI library. It handles routing, server-side rendering, server-only functions, form actions, prerendering, and deployment adapters for Node, Bun, Vercel, Cloudflare, Netlify, and static hosts — all without a virtual DOM runtime. SvelteKit's mental model is the cleanest in the framework world. Components are reactive via the compiler, not at runtime. Server work is `+page.server.ts` (or `+server.ts`) files that export `load` functions and form actions. The data flows from server to client with zero boilerplate. The honest trade-off: Svelte's community is smaller than React's, so there are fewer third-party component libraries and tooling. For greenfield web apps where the team is comfortable learning Svelte, SvelteKit is the most productive framework I have used in 2026. For long-running projects that need maximum ecosystem leverage, React/Next.js is still the safer default.
Svelte compiles components to vanilla JavaScript — no virtual DOM, minimal runtime.
Folders become routes; `+page.svelte` and `+page.server.ts` are the unit of a page.
HTML form submissions call named server actions — no client-side fetch boilerplate for forms.
Deploy to Node, Bun, Vercel, Cloudflare, Netlify, or static — adapter pattern keeps the framework host-agnostic.
Server `load` functions stream to the page; the client gets typed data, not boilerplate.
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