| Svelte | React | |
|---|---|---|
| Maintainer | Svelte core team (backed by Vercel) | Meta |
| First release | 2016 | 2013 |
| License | MIT | MIT |
| Learning curve | Gentle, the closest of any framework to plain HTML, CSS and JavaScript; runes in Svelte 5 add a small reactive vocabulary. | Moderate, jSX and hooks click within a few weeks, but most of the real learning is the surrounding ecosystem (routing, state management, build tooling). |
| Performance | Compiles the framework away, tiny bundles, no virtual DOM and top-tier runtime speed, especially on low-end devices. | Excellent for most UIs thanks to the virtual DOM and concurrent rendering; very large lists and animation-heavy views need memoization discipline. |
Svelte produces smaller bundles, starts faster and needs less code; React counters with a vastly larger ecosystem and hiring pool. Choose Svelte for performance-critical sites, widgets and small teams shipping fast; choose React when the project will need many integrations, many hires or a long roster of maintainers.