Privacy-first CAPTCHA for European businesses
Three layers of defense in one CAPTCHA: a real-time Bot Score that identifies risk, adaptive Proof-of-Work that stops attacks before they reach you, and Security Rules you control. Invisible to your users — relentless against bots.

Trusted by companies, organisations and governments.





What makes TrustCaptcha different?
Not just Proof-of-Work. Real bot detection.
Most European CAPTCHA alternatives rely solely on Proof-of-Work — they slow bots down, but can't tell them apart from humans. TrustCaptcha does this with built-in bot detection and additional security rules.

Attack Prevention
Dynamic Proof-of-Work makes mass attacks computationally prohibitive while staying instant for real users.
Learn more →
Bot Detection
Real-time risk scoring filters out bots, spam, and attackers, similar to the proven reCAPTCHA concept.
Learn more →
Security Rules
Custom access rules, geoblocking, bypass keys, and Proof-of-Work tuning for full control.
Learn more →TrustCaptcha is one of the few European CAPTCHAs that combines Proof-of-Work protection with real-time risk analysis and custom security rules — all in one privacy-first platform.
How it works
Stop bots without users noticing.
User interaction
A user interacts with a protected part of your website by opening a form, signing in, or clicking the CAPTCHA.
Invisible verification
Bot detection and proof-of-work run silently in the background with no clicks and no puzzles, finishing before the user submits the form.
Users pass, threats don't
Real users continue uninterrupted, while bots and attackers are slowed by proof-of-work and flagged with a precise bot detection score.
Optimized widget
A widget your users will love
On-brand and built to feel like a native part of your product.
- Full design control — every visual element is fine-tunable: colors, borders, corner radius, border width, and the checkbox.
- Light & dark mode — switch between light and dark themes, or auto-detect the user's system preference.
- Remove logo — hide the TrustCaptcha logo completely for a clean, fully branded experience.
- Unlimited languages — 37+ languages built-in out of the box, including auto language detection, and any other language can be added.
- Customizable text — every visible label, ARIA label, and screen-reader text can be tailored to your wording.
- Native on every screen — automatically adapts to phones, tablets, and desktops, always fitting your layout.
- Fully invisible mode — run the widget completely hidden from the user when needed, with no visible UI at all.
- WCAG & EAA aligned — designed to meet accessibility standards and the European Accessibility Act, keeping your site compliant and open to the estimated 1.3 billion people experiencing significant disability.
Verification
Verification users won't even notice
Frictionless for humans. Relentless against bots — including the AI-powered ones.
- Fully invisible CAPTCHA — no puzzles, no images, no challenges — users never see a verification happening. It just runs in the background while they get on with what they came for.
- Autostart — humans pass instantly, with verification beginning early in the background and usually finished before they hit submit.
- Instant for real users — verification typically completes in seconds for legitimate users.
- Three security mechanisms in one — attack prevention, bot detection, and customizable security rules combined into a single CAPTCHA.
- Resistant against AI-powered bots — advanced signal analysis and bot detection stop modern AI agents that would breeze through legacy CAPTCHAs.
- Built-in honeypot — built in out of the box, invisible to users, and an extra layer catching form-spam bots.
- Cookie-free — TrustCaptcha works entirely without cookies, protecting visitor privacy by design.
- EU-only hosting — all data is processed and stored exclusively in the EU on ISO 27001-certified infrastructure, with no transfers to third countries.
Platform
A platform built around how you work
TrustCaptcha gives your team all the tools to run protection confidently, with the right options for every workflow at any scale.
- Ready out of the box — every option is preconfigured and optimized for typical use cases and devices. Most teams launch with the defaults as-is, with every setting available the moment you want to fine-tune.
- Multiple environments — fully isolated staging, production, and development setups with their own settings, rules, and credentials.
- Real-time analytics — verification volumes, bot score distributions, device data, and regional traffic patterns at a glance.
- Verification insights — see every step of a verification, including captured data, access decisions, and the reasoning behind every risk score.
- Audit logs — complete trail of every action on your account, showing who did what, when, and on which object. Up to one year of retention.
- Data exports — pull verification data, analytics, and audit logs as CSV, Excel, or JSON whenever you need them.
- Users & roles — Admin, Member, and Viewer roles with SSO and optional MFA for the whole team.
- Bypass keys — skip verification entirely in trusted contexts, such as CI/CD end-to-end tests or internal tools.
- Engineer-led support — real engineers help with integration, migration, agency workflows, procurement, and health checks.

Comparison
How TrustCaptcha compares
Three security layers, real bot detection, and enterprise-grade compliance — in a single European platform.
| TrustCaptcha | Most EU CAPTCHAs | US Risk CAPTCHAs | Puzzle CAPTCHAs | |
|---|---|---|---|---|
| Proof-of-Work protection | ✓ | ✓ | - | - |
| Bot detection & risk scoring | ✓ | - | ✓ | - |
| Custom security rules | ✓ | - | ~ | - |
| Built-in honeypot | ✓ | - | - | - |
| CAPTCHA behavior settings | ✓ | - | - | - |
| EU-only hosting | ✓ | ✓ | - | - |
| Multiple environments | ✓ | - | - | - |
| Audit logs & verification insights | ✓ | - | ~ | - |
| Full widget customization | ✓ | ~ | - | - |
| Remove branding option | ✓ | - | - | - |
Integration
Built to run in minutes.
With 45+ pre-built integrations for popular CMS platforms, frameworks, and APIs, plus detailed documentation, most teams are up and running in minutes. Whether you're starting fresh or switching from another CAPTCHA solution, our team is always happy to help with integration questions.
Pre-built integrations
Drop-in plugins and SDKs for the platforms and frameworks your team already uses.
Documentation
Step-by-step setup guides, API reference, and code samples for every integration, plus troubleshooting tips and best practices.
Read the docs →<!-- Install the TrustCaptcha script -->
<script type="module" src="https://cdn.trustcomponent.com/trustcaptcha/3.0.x/trustcaptcha.esm.min.js"></script>
<!-- Add the widget inside your form -->
<trustcaptcha-component sitekey="<your_site_key>"></trustcaptcha-component>{
"verificationPassed": true,
"score": 0.3,
"decisionType": "STANDARD",
"decisionAction": "ALLOW",
"gatewayFailoverActive": false,
"riskScoringEnabled": true,
"origin": "https://www.your-website.com/sub-page",
// + 20 more verification intelligence fields
"browser": "Chrome 119.0.0",
"verificationStartedAt": "2026-05-03T13:30:05.941Z",
"verificationFinishedAt": "2026-05-03T13:30:08.214Z"
}Everything you need to protect your website now is just a few clicks away!
- EU-hosted & GDPR-ready
- No puzzles
- Try free for 14 days