📄️ Captcha provider overview
Add captcha to sign-in, sign-up, and password reset.
📄️ Default captcha
Use Casdoor’s built-in image captcha (digit sequence).
📄️ Cloudflare Turnstile
Add Cloudflare Turnstile captcha to your application.
📄️ reCAPTCHA
Add Google reCAPTCHA v2 Checkbox to your application.
📄️ hCaptcha
Add hCaptcha to your application as a captcha provider.
📄️ Alibaba Cloud Captcha
Add Alibaba Cloud Captcha to your application
📄️ Geetest captcha
Add Geetest CAPTCHA V4 to your application.