Stop bots without customers noticing! With puzzle-free, invisible verification, TrustCaptcha protects against spam and abuse. Privacy-friendly, EU hosted and designed to be unnoticed by real users.
Trusted by companies, organisations and governments.
Government, Germany
Company, Austria
Government, Luxembourg
Company, Germany
Company, Germany
Public, Germany
Chamber, Germany
Company, Germany
Why CAPTCHA?
Protect logins, and forms but without users noticing.
Reduce spam, stop fake accounts, and prevent account takeovers. Protect yourself and your website with a modern CAPTCHA.
Block Spam
Stop spam and fake accounts before they reach your systems, so your team spends less time moderating and can focus on more important tasks.
Prevent Bot Attacks
Block credential stuffing, brute force, scraping, fake signups, and other automated attacks, improving your website resilience.
Already Using CAPTCHA?
Many CAPTCHAs rely on a single layer, visible interaction, or less privacy-friendly setups. TrustCaptcha adds three security layers, invisible verification, and a privacy-first approach.
Why CAPTCHA Matters Now
Bots already make up over 50% of web traffic, making human verification essential for preserving long-term service quality.
Invisible Verification
TrustCaptcha runs fully in the background with zero puzzles, zero clicks, and zero user interaction. Completed before users notice it.
Why TrustCaptcha
TrustCaptcha combines invisible protection, three independent security layers, and privacy-first design for best possible security, conversion, usability, and compliance.
How it works
How it works in 3 steps.
Reduce spam, stop fake accounts, and prevent account takeovers. Protect yourself and your website with our CAPTCHA.
1. Integrate the widget
Use our guides to integrate the CAPTCHA widget into your website or app.
2. Verify invisibly in the background (Proof-of-Work)
Verification activates automatically as soon as users starts typing and finishes before they even submit the form. No clicks, no puzzles, no interaction at all.
3. Decide with your policy (Bot-Score)
Use our proprietary bot detection score to assess the risk level of each interaction.
Our strengths
Invisible to users. Powerful for security.
The better approach to bot protection.
Three independent security layers.
Three invisible layers. Zero interaction needed:
✓ Dynamic Proof of Work automatically increases the computational effort for suspicious requests. This slows attackers down by increasing the required time, making automated attacks inefficient and economically unattractive. Meanwhile, legitimate users experience normal performance at all times.
✓ Adaptive Bot Scoring protects every interaction through real-time evaluation of bot-signals. This continuous assessment detects anomalies early and helps with detecting high-risk activity before it reaches your systems. You are fully in charge of how you want to handle suspicious requests.
✓ Security rules (including allow/block lists, custom security logic and geo-blocking) let you tune the system precisely to your needs.
Every visual element can be adapted to fit your brand.
✓ 37+ Languages included with the option to customize and even overwrite every text element.
✓ Themes with Light/Dark mode supported and the option to auto-detect user settings.
✓ Design controls for colors, radius, and layout down to the last detail.
✓ White label removes TrustCaptcha branding completely for a clean brand experience.
✓ Accessibility built in by design ensuring that every visitor can verify, no matter their device or ability. Alligned with the WCAG and the European Accessibility Act (EAA).
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