Adaptive invisible NoCAPTCHA
Frictionless verification for real humans, robust against bots. Most visitors pass without lifting a finger.
99.5% human first-passInvisibleNo tracking
Smart, privacy-compliant CAPTCHA · SOC 2 Type II attested
Stop bots without punishing real users
The smart, privacy-compliant CAPTCHA that blocks bots, fraud, and abuse while real users pass in a single click. SOC 2 Type II attested, GDPR and CCPA ready.
Free to start · No credit card · Live in minutes
app.yoursite.com/login
Trusted by security and product teams worldwide
Proven at scale
2B+
verifications / month
99.999%
uptime SLA
190+
countries served
<30ms
added latency
Why MTCaptcha
Everything you need to stop bots
Enterprise-grade protection that respects privacy, accessibility, and your users.
Adaptive risk engine
Continuously reads the threat environment and adjusts difficulty. Easy on humans, hard on bots.
Built for the enterprise
Multi-user console, automated regression tests, server-side token decryption, and Threat SPECT.
Enterprise dashboards
Multiple user accounts with rich analytics and metrics to monitor traffic and risk.
GDPR-compliant captcha
Privacy-first protection against spam and abuse, without invasive tracking.
24/7 global availability
Decentralized architecture and worldwide data centers keep you protected, even under DDoS.
Accessibility & WCAG/EAA
WCAG 2.1 AAA, EAA, Section 508 and EN 301 549 compliant. Colorblind-safe and screen-reader friendly.
Customizable themes
Eleven preset themes plus fully customizable CSS to match your brand exactly.
SOC 2 Type II attested
Independently audited proof of our security controls, ready for enterprise procurement.
How we compare
MTCaptcha vs reCAPTCHA v2
More protection, more privacy, and more control, feature for feature.
| Capability | MTCaptcha | reCAPTCHA v2 |
|---|---|---|
| Preset themes | 11 presets | 2 presets |
| Customizable CSS styles | ||
| Localized languages (i18n) | ||
| Invisible captcha | ||
| Low-friction captcha | ||
| NoCAPTCHA captcha | ||
| Adaptive captcha complexity | ||
| Proof of Work | ||
| Adaptive Proof of Work | ||
| SOC 2 Type II | Google Cloud SOC 2 only | |
| GDPR | ||
| Accessibility (WCAG 2.1 AAA / EAA) | AAA / EAA | AAA only |
| Multi-region datacenters | ||
| Works in China | Inconsistent | |
| Actionable risk profile | ||
| Threat SPECT | ||
| Support by real people | ||
| Multiple user accounts | ||
| Automated regression test support | ||
| Firewall-ready, API-less token validation |
Trust & compliance
Security your auditors will love
Independent, third-party assurance, not marketing claims. Deploy with the certifications and data-handling guarantees enterprise procurement actually requires.
FeaturesSOC 2 Type II
Independently audited security controls
GDPR
EU data protection compliant
CCPA
California consumer privacy
WCAG 2.1 AAA
Highest accessibility standard (AAA)
How it works
Protected in three steps
01
Embed the widget
Add one script tag and a widget element to any form.
02
Verify server-side
Check the returned token from your backend using your private key.
03
Block the bots
Automated and abusive traffic is stopped before it ever reaches you.
Built for developers
Integrate in minutes, not sprints
Clean APIs, predictable tokens, and documentation that gets out of your way. Ship privacy-first protection without rebuilding your forms.
Read the developer guide login.html
<html>
<head>
<!-- Configuration to construct the captcha widget. Sitekey is a Mandatory Parameter-->
<script>
var mtcaptchaConfig = {
"sitekey": "<YOUR SITE KEY>"
};
(function(){var mt_service = document.createElement('script');mt_service.async = true;mt_service.src = 'https://service.mtcaptcha.com/mtcv1/client/mtcaptcha.min.js';(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(mt_service);
var mt_service2 = document.createElement('script');mt_service2.async = true;mt_service2.src = 'https://service2.mtcaptcha.com/mtcv1/client/mtcaptcha2.min.js';(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(mt_service2);}) ();
</script>
</head>
<body>
<!-- MTCaptcha library by default looks for a DIV of class='mtcaptcha' to place the captcha widget -->
<div class="mtcaptcha"></div>
</body>
</html>Loved by customers
Trusted by teams who care about UX and privacy
MTCaptcha is a great captcha alternative that adheres to current privacy laws, with low-friction invisible verification. It is priced well, and their team was incredibly responsive with high-expertise assistance.
MTCaptcha is privacy compliant in the EU. Implementing it on any site was quite easy and worked well. We are more than satisfied!
Ease of use and support. Great to work with and very responsive. They listen to customer needs and adapt.
Works in China, GDPR compliant, a great support team, and an informative dashboard to monitor everything. Multiple language support in the captcha too.
The interface is super user-friendly and secure. It helps identify real users from bots, so companies get real data.
Ready to stop bots the smart way?
Join the teams protecting their forms without sacrificing privacy or user experience.
For more themes and CSS style customization,
see MTCaptcha's Code Builder