Migrating from hCaptcha

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

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

<script src="https://challenges.cloudflare.com/turnstile/v0/api.js" async defer></script>

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

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

Server-side integration

Update the server-side integration by replacing the siteverify URL. Replace:

https://hcaptcha.com/siteverify

With:

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

Replace the h-captcha-response input name with cf-turnstile-response.

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