Javascript Programming Tutorials, Guides & Best Practices

When building a multilingual React application, translating the visible content is just part of the job. To make your app SEO-friendly and user-centric, you also need to:

• Translate URLs/slugs (e.g., /about-us → /fr/a-propos)
• Maintain SEO with hreflang for each language
• Improve UX by aligning URLs with user language
• Ensure route accessibility via browser language or manual switching

In 2025, certain laws enforce localized data:

• GDPR requires local-language privacy policies
• China's Cybersecurity Law needs local hosting + Mandarin support
• Saudi localization laws mandate Arabic for all government services

Implementing i18n is no longer optional — it's essential in 2025 as user bases go global and inclusive design becomes the standard.

With i18next and react-i18next, you can:

Use a design system or tokens for consistent UI/UX across micro-apps.

Use a centralized approach for auth tokens and route management — or pass them via shared context if needed.

   import create from 'zustand';

   const useStore = create((set) => ({
     count: 0,
     increase: () => set((state) => ({ count: state.count + 1 })),
     decrease: () => set((state) => ({ count: state.count - 1 })),
   }));

   import React from 'react';
   import useStore from './store';

   function Counter() {
     const { count, increase, decrease } = useStore();
     return (
       <div>
         <h1>{count}</h1>
         <button onClick={increase}>Increase</button>
         <button onClick={decrease}>Decrease</button>
       </div>
     );
   }

   export default Counter;