If you’re building a multilingual frontend website, the best approach today is Next.js with Server-Side Rendering (SSR) 🚀🌍

Why SSR wins for i18n ✅
With Next.js SSR, you can prepare translations on the server and pass only the needed dictionary into client components. The user receives just one locale pack, the one they actually need 🧠✨

Why client-side translations are a bad idea ❌📦
If you translate purely on the client, you often end up shipping all locales to the browser. And if you have, say, 30 languages… 😬
That’s a huge bundle size increase, which means:
- slower first load 🐢
- worse Core Web Vitals 📉
- more data usage 📶
- lower conversion rates 💸

The correct model 🏗️
✅ Server picks the locale (URL, headers, cookies, user settings)
✅ Server loads only that translation file
✅ Client components receive only what they need
✅ Fast, scalable, SEO-friendly 💡🔍

Bottom line 🎯
Want a fast multilingual site?
Use Next.js + SSR + server-provided translations, not client-side translation loading ⚡🌐