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Version: 5.x.x

Installation

To use Tolgee in your React application, you need to follow these steps:

  1. Install the Tolgee SDK
  2. Configure the Tolgee API
  3. Add the Tolgee Provider

Install the Tolgee SDK​

To install Tolgee's React integration SDK, execute the following command:

npm install @tolgee/react

Configure the Tolgee API​

Once the SDK is installed, you need to initialize it. For the initialization, you need the Tolgee API URL, and the Tolgee API Key. To generate the API Key, follow the step-by-step instructions mentioned on the API keys and PAT tokens page.

danger

Make sure you don't leak your API key. If the API key is leaked, visitors can edit the translations on your site.

After generating the API key, add these credentials in your .env file. Your .env should look like this:

REACT_APP_TOLGEE_API_URL=https://app.tolgee.io
REACT_APP_TOLGEE_API_KEY=tgpak_gfpwiojtnrztqmtbna3dczjxny2ha3dmnu4tk4tnnjvgc
note

If you are using a React-based framework like Next.js, make sure you paste these credentials in the correct file.

Add the Tolgee Provider​

Next, use the above credentials to initialize Tolgee in your React application. You can use Tolgee across your React application by using the TolgeeProvider.

Wrap your App component within the TolgeeProvider, as show in the code below.

import { Tolgee, DevTools, TolgeeProvider, FormatSimple } from "@tolgee/react";

const tolgee = Tolgee()
  .use(DevTools())
  .use(FormatSimple())
  .init({
    language: 'en',

    // for development
    apiUrl: process.env.REACT_APP_TOLGEE_API_URL,
    apiKey: process.env.REACT_APP_TOLGEE_API_KEY,

    // for production
    staticData: {
      ...
    }
  });

...

<TolgeeProvider
  tolgee={tolgee}
  fallback="Loading..." // loading fallback
>
  <App/>
</TolgeeProvider>

The above code does the following:

  • Imports the required classes, plugins and the TolgeeProvider from the SDK.
  • Creates a new instance of Tolgee, configures it to use the DevTools and FormatSimple plugins, and initializes it using the credentials.
  • Passes the instance to the TolgeeProvider and sets a fallback.
  • Uses TolgeeProvider to wrap the component.

You can configure more options and plugins during initialization. Learn about these other options and Tolgee plugins in their respective documentation.

Prepare for production​

Tolgee will automatically omit DevTools from your bundle when you build your app for production. So it won't fetch translations directly from Tolgee Platform and it won't allow users to modify translations.

There are generally two ways how to use translations in production:

In production mode, you should never use localization data directly from Tolgee REST API, because it can negatively affect your page performance.

tip

You can also check the React example application to learn more.