# # Customize Internationalization Resources

## # Assumption

Assume you have an `assets/` in your website root directory, where you will configure the internationalization resources. Let's call this path as `websiteRoot/assets/`.

## # Configuration

1. Copy `lib/locals` inside SDK to `websiteRoot/assets/`.

2. Set up the I18N path for loading resources.

       new UIExtension.PDFUI({
           i18n: {
               absolutePath: 'websiteRoot/assets/locals'
           },
           // the other options...
       });

3. Add more localization languages Create a new folder in `websiteRoot/assets/locals`. The folder name should follow the language codes standard, such as zh-CN for Chinese. And then new a file and name it as `ui_.json`.

4. Set up default language

       new UIExtension.PDFUI({
           i18n: {
               absolutePath: `websiteRoot/assets/locals`,
               lng: 'zh-CN'
           }，
           // the other options
       })

## # Verify the configuration in developer environment

1. Clear your browser caches to ensure the latest I18N resources will be loaded.
2. Refresh your browser, open the Network panel in DevTools,and check if the `ui_.json` request url points your custom language path. If so, it means success.