Privacy-First Bot Protection
Protect your website from bots and spam with our EU-hosted, GDPR-compliant CAPTCHA solution. Easy integration, powerful protection.
From €0: free with every domain registered at Cloudzaro – or for up to 100 websites of your choice for €3.99/month (incl. VAT) including DNS hosting.
Get Started DNS ServicesExperience our CAPTCHA in action
Intelligent IP-based rate limiting prevents abuse and automated attacks while allowing legitimate users smooth access.
Advanced computational challenges ensure only real users can pass, making bot attacks economically unfeasible.
Each CAPTCHA generates a unique, single-use token that prevents replay attacks and token theft.
Track challenge counts, success rates, and geographic distribution with comprehensive real-time statistics.
Hosted in Germany with full GDPR compliance. No tracking, no third-party data sharing, complete privacy.
Simple two-line integration. Add our widget to your site and start protecting within minutes.
Monitor and analyze your CAPTCHA performance in real-time
Total CAPTCHA challenges served
Percentage of successful verifications
Where your traffic comes from
Get up and running in minutes
<cloudzaro-widget data-sitekey="YOUR-SITE-KEY"></cloudzaro-widget>
<script src="https://cs.cloudzaro.com/api.js" async defer></script>Use our API to verify the CAPTCHA token on your server and protect your forms from automated submissions.
Two ways to cookie-free spam protection – no tracking, hosted in Germany.
Register or transfer your domain to Cloudzaro – CAPTCHA and DNS management for that domain are then included for free.
Find a domainCAPTCHA for up to 100 websites, wherever your domain is hosted – including DNS hosting with DNSSEC for up to 100 domains.
Get started