---
description: Migrate from Google reCAPTCHA to Cloudflare Turnstile.
title: Migrate from reCAPTCHA
image: https://developers.cloudflare.com/og-docs.png
---
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# Migrate from reCAPTCHA
Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://e8aee267.previews.developers.cloudflare.com/turnstile/migration/recaptcha/index.md)|[Agent setup](https://e8aee267.previews.developers.cloudflare.com/agent-setup/)
If you are using reCAPTCHA today, you can switch seamlessly to Cloudflare Turnstile by following the step-by-step guide below to assist with the upgrade process.
To complete the migration, you must obtain the [sitekey and secret key](https://e8aee267.previews.developers.cloudflare.com/turnstile/get-started/widget-management/).
Note
Turnstile migration is currently compatible up to reCAPTCHA v2.
## Client-side integration
1. Update the client-side integration by inserting the Turnstile script snippet in your HTML's `` element.
```html
```
Note
Adding `?compat=recaptcha` runs Turnstile in compatibility mode, which enables the following features:
* implicit rendering for reCAPTCHA
* `g-recaptcha-response` input name for forms
* register the Turnstile API as `grecaptcha`
2. Locate the `grecaptcha.render()` calls and replace the sitekey with your Turnstile sitekey.
Note
Turnstile supports:
* the `render()` call
* reCAPTCHA v2 invisible mode with the `execute()` call
## Server-side integration
Update the server-side integration by replacing the Siteverify URL.
Replace `https://www.google.com/recaptcha/api/siteverify` with the following:
```txt
https://challenges.cloudflare.com/turnstile/v0/siteverify
```
Differences to reCAPTCHA's Siteverify
reCAPTCHA supports `GET` requests using query parameters, such as `GET /siteverify?response=&secret=`.
Turnstile's Siteverify endpoint does _not_ support this and only accepts `POST` requests with a FormData or JSON body.
Refer to [server-side validation](https://e8aee267.previews.developers.cloudflare.com/turnstile/get-started/server-side-validation/) for more information.
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## On this page
[Docs](https://e8aee267.previews.developers.cloudflare.com/)
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