Svelte and React are popular JavaScript frameworks for building web apps. Choose the right one based on your project needs and priorities in 2025.

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In 2025, the choice between Svelte and React remains crucial for frontend developers focused on performance, user experience, and scalable app development. While React, a mature library with a vast ecosystem, is optimal for large-scale, complex applications, Svelte offers a lightweight and performance-optimized alternative suitable for small to medium-sized projects. This comparison highlights their key differences in performance, developer experience, and architecture to help developers choose the most appropriate framework based on project needs.

Svelte vs React: Which Framework to Choose?

Architectural difference between Svelte and React

IMO the main reason to learn React instead of Svelte is jobs opportunitites.

the sample from svete is old and now with the new svelte runes $state and $effect…,
start to look like react :
<pre><code>&lt;script&gt;
	let size = $state(50);
	let color = $state(&#x27;#ff3e00&#x27;);

	let canvas;

	$effect(() =&gt; {
		const context = canvas.getContext(&#x27;2d&#x27;);
		context.clearRect(0, 0, canvas.width, canvas.height);

		// this will re-run whenever `color` or `size` change
		context.fillStyle = color;
		context.fillRect(0, 0, size, size);
	});
&lt;/script&gt;

&lt;canvas bind:this={canvas} width=&quot;100&quot; height=&quot;100&quot; /&gt;
</code></pre>