Svelte shifts work from the browser to the compiler, producing highly optimized vanilla JavaScript with minimal bundle sizes.
Svelte takes a fundamentally different approach from React and Vue. Instead of shipping a runtime framework to the browser, Svelte compiles your components into optimized vanilla JavaScript at build time. The result is smaller bundle sizes, faster initial loads, and less memory usage. Svelte's syntax is remarkably concise — reactive state is just a variable assignment, and two-way bindings are built in. SvelteKit, the official application framework, provides routing, SSR, and deployment adapters. While Svelte's ecosystem is smaller than React's, developers consistently rate it as the most satisfying framework to use in surveys.