Svelte vs Vue

Svelte and Vue both use HTML-like templates instead of JSX, and both feel approachable coming from plain HTML/CSS/JS. The real difference is where the work happens: Vue ships a runtime library to the browser that tracks reactivity and patches the DOM as your app runs; Svelte compiles your components ahead of time into plain JavaScript that updates the DOM directly, with no framework runtime shipped alongside it.

Reactivity: compiled vs. tracked at runtime

Vue's reactivity is a runtime system — wrap a value in ref() or reactive(), and Vue's runtime tracks which parts of the DOM depend on it as the app executes.

// Vue — tracked at runtime by the reactivity system
const count = ref(0);
count.value++;

Svelte's reactivity is resolved at compile time. The compiler reads your component and generates code that updates only the exact DOM node a value affects — there's no reactivity system running in the browser at all.

<!-- Svelte — the compiler generates the update logic ahead of time -->
<script>
  let count = $state(0);
</script>
<button onclick={() => count++}>{count}</button>

Bundle size and performance

Because Svelte doesn't ship a runtime, a small Svelte app can weigh kilobytes where the equivalent Vue app pays a fixed cost for Vue's runtime library on top of your own code. In practice this mostly matters for performance-sensitive, JS-light pages — for typical application UIs, both are fast enough that this rarely decides the outcome on its own.

Ecosystem and maturity

This is where the gap is largest. Vue has been in production for a decade, has Nuxt as a mature meta-framework, Pinia for state management, and a large pool of third-party component libraries, job postings, and Stack Overflow answers. Svelte and its meta-framework SvelteKit are newer and smaller — fewer libraries, fewer teams hiring for it, and you'll hit more situations where you're writing something yourself instead of finding a package for it.

Which should you learn first

Learn Vue first if you want the larger ecosystem, more job opportunities, and a framework that's had more time to sand off rough edges. Learn Svelte if you're drawn to its compiler-driven simplicity, want to understand a genuinely different approach to UI reactivity, or are building something where bundle size is a hard constraint (embedded widgets, low-end devices). The two aren't mutually exclusive — Svelte's template syntax will feel familiar if you already know Vue's.

See What is Vue? for how Vue's runtime reactivity and Single-File Components work.