Comparison
Paraglide's compiler approach enables optimizations that are not possible with runtime libraries. Below is a comparison of Paraglide JS with other popular i18n libraries.
If you are looking for a benchmark, check out the interactive benchmark.
Basic Features
| Feature | Paraglide JS | i18next | React-Intl/FormatJS |
|---|---|---|---|
| Architecture | đī¸ Compiler | đ Runtime | đ Runtime |
| Tree-shaking | â Yes | â No | â No |
| Runtime Size | â Tiny (as small as 300B) | â ī¸ Large (10kB+) | â ī¸ Large (8kB+) |
| Type Safety | â Yes | đ Via workarounds | â No |
| Pluralization | â Yes | â Yes | â Yes |
| Framework agnostic (React, Svelte, Vue, ...) | â Yes | đ Wrappers needed | đ Wrappers needed |
| Metaframework agnostic (NextJS, SvelteKit, Astro, ...) | â Yes | đ Wrappers needed | â Only supports plain JS or React (source) |
Advanced Features
| Feature | Paraglide JS | i18next | React-Intl/FormatJS |
|---|---|---|---|
| Configurable strategies âšī¸ | â Yes | đ Via plugins | â No |
| Localized (i18n) routing | â Yes | â No | â No |
| Variants âšī¸ | â Yes | â No | â No |
| Multi-tenancy âšī¸ | â Yes | â No | â No |
| Message syntax agnostic âšī¸ | â Via inlang plugins | â Via different backends | â Only ICU |
| Scales well over 15 locales | đ Experimental split locale option | â Via HTTP backend | â No |
| Component interpolation | â Upvote issue #240 | đ Only for React | đ Only for React |
