Tolgee

Tolgee is a complete localization platform that covers the entire lifecycle of your translations—from string management to live in-context editing.
Thanks to its SDK, CLI and REST API, Tolgee fits into virtually any tech stack.

• In-context translation: Edit texts directly inside the running application.
• Machine suggestions: Accept DeepL, Google, Azure, etc. with a single click.
• Translation memory: Automatically reuses existing phrasing.
• Automatic screenshots: Every string gets a UI snapshot.
• Self-hosted or cloud: Docker Compose in < 1 min, or use the hosted SaaS.
• SDKs: React, Angular, Vue 3, vanilla JS, iOS, Android, Flutter, …

Each string is referenced by a key that you maintain in Tolgee.
At runtime Tolgee ships all strings as compact JSON files that your app loads on demand.

How it works in Next.js

With @tolgee/react you can integrate Tolgee into Next.js in minutes.

Tolgee supports both the App Router and the Pages Router and works on the client as well as on the server (RSC).

Next.js + Tolgee in practice

A detailed guide (custom fetch plugin, caching, fallbacks) can be found here: