---
title: Concepts
description: Core concepts for Turnstile, including widgets and challenge types.
image: https://developers.cloudflare.com/core-services-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/turnstile/llms.txt  
> Use this file to discover all available pages before exploring further.

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# Concepts

Refer to the following pages for more information about Turnstile's concepts:

* [ Turnstile widgets ](https://developers.cloudflare.com/turnstile/concepts/widget/)
* [ Cloudflare Challenges ](https://developers.cloudflare.com/cloudflare-challenges/)

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