Adaptive invisible NoCAPTCHA
Frictionless verification for real humans, robust against bots. Most visitors pass without lifting a finger.
99.5% human first-passInvisibleNo tracking
SOC 2 Type II attested · Data Privacy Framework certified
Stop bots without compromising trust
MTCaptcha pairs an adaptive, invisible verification engine with SOC 2 Type II attestation, Data Privacy Framework certification, and WCAG 2.1 AAA accessibility: real compliance for regulated industries, built into a widget your users never notice.
SOC 2 Type II · GDPR & DPF certified · WCAG 2.1 AAA · Proven in China
app.yoursite.com/login
Proven at scale
2B+
verifications per 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 vs hCaptcha vs Turnstile vs Friendly Captcha
Checked directly against every vendor's own site, not recalled from memory. Where a claim isn't published, it says so.
| Capability | MTCaptcha | reCAPTCHA | hCaptcha | Turnstile | Friendly Captcha |
|---|---|---|---|---|---|
| Free tier | Yes, up to 10K/mo | Yes, up to 10K/mo | Yes (Basic) | Yes, unlimited (Standard) | Yes, 1K/mo (non-commercial) |
| Paid plan starts at | $29/mo | ~$1 per 1K after free tier | $99/mo (100K included) | No paid tier for most use | €9/mo |
| Detection method | Adaptive invisible + Proof of Work | Invisible, risk score (v3/Enterprise) | Checkbox + puzzle; passive mode on higher tiers | Invisible, managed challenge | Invisible, Proof of Work |
| SOC 2 Type II | Attested | Google Cloud SOC 2 only | Not published | Not published | ISO 27001 in progress, not SOC 2 |
| Data Privacy Framework | Certified | Not published | Not published | Not published | Not published |
| WCAG conformance | 2.1 AAA | Not published | 2.2 AA | Not published | 2.2 AA |
| Works in China | Yes, verified | Inconsistent | "Works in every country" (self-reported) | Not published | Not published |
Switching from one of these?
Checked directly against each vendor's own site, 11 Aug 2026. "Not published" means no public claim was found either way, not that the vendor lacks it.
Trust & compliance
Security your auditors will love
Independent, third-party assurance, not marketing claims. Deploy with the attestations and data-handling guarantees enterprise procurement actually requires.
FeaturesSOC 2 Type II
Independently audited security controls
WCAG 2.1 AAA
Highest accessibility standard (AAA)
GDPR
EU data protection compliant
Data Privacy Framework
Certified for EU-U.S., UK & Swiss data transfers
CCPA
California consumer privacy
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>Trusted by enterprises
Loved by customers
Trusted by teams who care about UX and privacy
Reviews from G2
Works in China, GDPR compliant, a great support team, and an informative dashboard to monitor everything. Multiple language support in the captcha too.
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.
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