Migrate from hCaptcha

Last updated May 5, 2026 If you are using hCaptcha 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.

Client-side integration

  1. Update the client-side integration by inserting the Turnstile script snippet in your HTML's <head> element:

Turnstile script snippethtml

```html

```

  1. Locate the hcaptcha.render() calls and replace the sitekey with your Turnstile sitekey and the API.

Renderjs

js // before hcaptcha.render(element, { sitekey: "00000000-0000-0000-0000-000000000000" }) // after turnstile.render(element, { sitekey: "1x00000000000000000000AA" })

Note

Turnstile supports:

  • the render() call
  • hCaptcha invisible mode with the execute() call

Server-side integration

  1. Update the server-side integration by replacing the Siteverify URL.

Replace: https://hcaptcha.com/siteverify with the following:

txt https://challenges.cloudflare.com/turnstile/v0/siteverify

  1. Replace the h-captcha-response input name with the following:

txt cf-turnstile-response

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description: Migrate from Google reCAPTCHA to Cloudflare Turnstile. title: Migrate from reCAPTCHA image: https://developers.cloudflare.com/turnstile/migration/recaptcha/og.png?v=1ead042fa390df41

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