---
description: Languages supported by Cloudflare challenge pages, detected via navigator.language.
title: Supported languages
image: https://developers.cloudflare.com/og-docs.png
---

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# Supported languages

Last updated May 5, 2026|Copy as Markdown|[View as Markdown](https://developers.cloudflare.com/cloudflare-challenges/reference/supported-languages/index.md)|[Agent setup](https://developers.cloudflare.com/agent-setup/)

## Multi-language support

Cloudflare Challenges can detect multiple languages and display the localized challenge experience, which is determined by `navigator.language` value. The [Navigator.language read-only property ↗](https://developer.mozilla.org/en-US/docs/Web/API/Navigator/language) returns a string representing the preferred language of the user, usually the language of the browser user interface.

For language support specific to Challenge Pages, refer to the table below.

| Language                      | Language code(4 letters) | Language code(2 letters) |
| ----------------------------- | ------------------------ | ------------------------ |
| Arabic (Egypt)                | ar-eg                    | ar                       |
| Chinese (Simplified, China)   | zh-cn                    | zh                       |
| Chinese (Traditional, Taiwan) | zh-tw                    | \--                      |
| Dutch (Netherlands)           | nl-nl                    | nl                       |
| English (United States)       | en-us                    | en                       |
| French (France)               | fr-fr                    | fr                       |
| German (Germany)              | de-de                    | de                       |
| Indonesian (Indonesia)        | id-id                    | id                       |
| Italian (Italy)               | it-it                    | it                       |
| Japanese (Japan)              | ja-jp                    | ja                       |
| Korean (Korea)                | ko-kr                    | ko                       |
| Persian                       | \--                      | fa                       |
| Polish (Poland)               | pl-pl                    | pl                       |
| Portuguese (Brazil)           | pt-br                    | pt                       |
| Russian (Russia)              | ru-ru                    | ru                       |
| Spanish (Spain)               | es-es                    | es                       |
| Turkish (Turkey)              | tr-tr                    | tr                       |

### Turnstile language support

For language support specific to Turnstile, refer to the [Turnstile documentation](https://developers.cloudflare.com/turnstile/reference/supported-languages/).

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