i18n

The plugin's own strings live under the folderPicker: namespace as typed translations. Override or extend through the translations option:

import { folderPicker } from '@10x-media/folder-picker'
import { keys } from '@10x-media/folder-picker/i18n'
import { buildConfig } from 'payload'

export default buildConfig({
  // ...
  plugins: [
    folderPicker({
      translations: {
        de: { [keys.pluginName]: 'Ordnerauswahl' },
      },
    }),
  ],
})

@10x-media/folder-picker/i18n exports keys, the built-in translations, and the TranslationKey / TranslationsOption types. Misspell a key and the build fails.

The plugin ships English, German and Ukrainian. A locale the host serves without a matching bundle falls back to English, so add it through translations above rather than waiting for the plugin to grow one.

Everything else is Payload's

The namespace is deliberately small. The drawer speaks in Payload's own strings, general:select, general:move, general:delete, folder:byFolder and the rest, so the picker follows the admin locale without the plugin restating any of it.

Retitling those goes through Payload's i18n.translations, not this option:

export default buildConfig({
  i18n: {
    translations: {
      de: { general: { select: 'Übernehmen' } },
    },
  },
})