React Router DOM and Wouter are both client-side routing libraries for React applications, but they target fundamentally different use cases. React Router DOM is the de facto standard for React routing, offering a comprehensive feature set including nested routes, lazy loading, loaders, actions, and sophisticated navigation patterns. Wouter positions itself as a minimalist alternative, delivering basic routing functionality in under 4 kB with a hooks-first API that prioritizes simplicity over features.
This comparison matters because routing is a core architectural decision that affects bundle size, performance, and developer experience throughout your application's lifecycle. React Router DOM serves teams building complex SPAs with sophisticated navigation requirements, while Wouter appeals to developers who need straightforward routing without the overhead of a full-featured solution. Understanding the tradeoffs between these libraries helps you avoid over-engineering simple projects or under-tooling complex ones.
Choose React Router DOM for any production application with more than basic routing needs. If you're building a multi-page SPA, need nested routes, require data loading patterns, or anticipate your routing becoming more complex over time, React Router's 30 kB cost is a worthwhile investment. The comprehensive feature set, ecosystem support, and established patterns will save you more development time than the bundle size will cost in load time. Teams with multiple developers will benefit from React Router's widespread familiarity and extensive documentation.
Choose Wouter only when you have a genuinely simple routing scenario and bundle size is a critical constraint. This typically means landing pages with 5-10 routes, marketing microsites, or embedded widgets where every kilobyte matters. If you're unsure whether your routing will remain simple, default to React Router—migrating from Wouter to React Router later is painful because the APIs aren't compatible despite similar naming. Wouter works well for experienced developers who understand its limitations and can work around them, but it's not a drop-in replacement for React Router's feature set.