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Made & hosted in Germany

Privacy-first CAPTCHA that just works

Protect your forms and APIs with GDPR-compliant security. No tracking, no cookies, just seamless protection.

Start Free Documentation
1,000 free validations
Deep analysis
GDPR compliant
Made in Germany
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Interactive

Try it yourself

Experience our different widget modes and see how seamlessly they integrate

Click to Solve

Users click a simple checkbox to verify. Quick and familiar interaction pattern.

Demo: Login Form
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Live Preview

Comprehensive Analytics

See insights into your captcha performance. Track challenges, solve rates, and user behavior.

Simulated demo data

Traffic Overview

Track captcha activity: issued challenges, successful solves, blocked bots, and more

Browser Distribution

See which browsers your visitors use

Platform Distribution

Understand your audience's devices

Geographic Distribution

Countries where challenges were solved

Get full analytics
Integrations

Works with everything

Official SDKs and plugins for popular frameworks. Get up and running in minutes.

14+
Frameworks
5min
Setup
JavaScript
React
Next.js
Vue
Angular
Svelte
Express
Django
Python
Go
Rails
Rust
WordPress
View all integrations
Powerful Features

Why choose Captchacat ?

Built for developers who care about privacy and user experience. Every feature designed with purpose.

verified_user

GDPR Compliant

Fully compliant with European data protection regulations. No user tracking, no data selling, no third-party transfers.

Click to learn more

Server-Side Hashing

All user-identifying data is irreversibly hashed on our servers. IP addresses, browser fingerprints, and other identifiers become anonymous tokens that cannot be reconstructed to real values.

Memory-Only Security Data

Rate limiting, IP counting, and other security-critical data exists only in RAM. Nothing is written to disk. When the server restarts, this data is gone — by design.

Zero Cookies

We set no cookies whatsoever. No first-party, no third-party, no "essential" cookies. Your users won't see cookie banners or consent popups from us.

sentiment_satisfied

User Friendly

Works invisibly without any user interaction, or optionally shows an interactive challenge for enhanced security — you choose the balance.

Click to explore

Choose the verification style that fits your needs — from completely invisible to interactive challenges

Auto

Automatically verifies users in the background with zero interaction required.

No interaction

Click

Users click a simple checkbox to verify. Quick and familiar interaction.

One click

Interactive

An engaging puzzle that humans find easy but bots struggle with.

Highest security

Invisible

Runs completely in the background with no visible widget at all.

No UI

Switch modes anytime from your dashboard — no code changes required

Get started
analytics

Comprehensive Analytics

Insights into validation patterns, solve times, browser distribution, and bot detection rates.

See live demo
tune

Advanced Security Settings

Granular control over security settings, IP lists, rate limiting, and regional blocking — all from one dashboard.

Click to explore

Security Settings

Fine-tune challenge difficulty to balance security and user experience

Proof of Work
Smart|
Easy Medium Hard
Time-to-Pass
Smart| 0 - 10,000ms

IP Blacklist

Block specific IP addresses or ranges from accessing your protected resources

192.168.1.100 Single
10.0.0.0/24 CIDR
172.16.0.1-172.16.0.255 Range
Bulk Import
Enable/Disable

IP Whitelist

Trusted IPs bypass all security checks — perfect for internal services and known partners

203.0.113.50 Single
10.10.0.0/16 CIDR
192.168.1.1-192.168.1.50 Range
Bulk Import
Enable/Disable

Rate Limiter

Prevent abuse by limiting how many captcha submissions each user can make within a time window

100
requests per user
Time window:
SecondsMinutesHours

Country Blocking

Block traffic from specific countries or regions to reduce unwanted requests

🇷🇺 Russia 🇨🇳 China 🇰🇵 North Korea 🇮🇷 Iran + many more

Custom Widget Appearance

Customize colors, border radius, padding and font size to match your brand identity

Colors Border Radius Padding Font Size
Get full control
security

Advanced Bot Protection

Proof-of-work challenges, behavioral analysis, and JavaScript obfuscation to stop automated attacks.

Click to explore

Our protection stack is designed around attacker behavior, not signatures.

smart_toy

Automation Detection

Threat Headless browsers and automation frameworks bypassing client-side checks
Defense Detects Selenium, Puppeteer, and PhantomJS — including stealth plugins like Selenium Stealth and Puppeteer Extra Stealth
javascript

Code Obfuscation

Threat Reverse-engineering of CAPTCHA logic
Defense Obfuscated code, symbol renaming, and critical paths implemented in a JS VM
fingerprint

Fingerprint & Headers

Threat Spoofed headers and known crawler signatures
Defense Static rules block known bot and crawler headers
touch_app

Interactive Challenges

Optional

Enable optional interactive challenges with 3 difficulty levels for extra protection on high-risk actions.

public

Network Access Control

Threat Attacks from proxies & data centers
Defense IP, ASN, and geo-based controls
build

Custom Solutions

Enterprise customers can request tailored security configurations, white-label designs, and dedicated support.

Click to explore

Priority Feature Requests

Enterprise

Shape the product roadmap. Enterprise customers can request custom features with prioritized implementation — your ideas get fast-tracked for development.

White-Label Designs

Enterprise

Fully branded CAPTCHA experiences. Request custom themes, colors, and styling that seamlessly match your brand identity — your users, your look.

Bespoke Integrations

Enterprise

Connect with any system. Get custom integrations built for your specific tech stack, APIs, and workflow requirements — if it can connect, it can be integrated.

Priority Support

Enterprise

Direct communication channel. Get priority ticket handling, dedicated attention, and faster response times when you need help most.

How it works: All feature requests are carefully evaluated for product fit. Enterprise customers receive priority consideration and dedicated development time for approved features. On other plans, you're welcome to submit ideas — great suggestions that align with the product vision may still be implemented.

Explore Enterprise plans
Start free, upgrade anytime

Simple pricing

No hidden fees. No surprises. Just honest pricing.

Monthly Annual -17%
Free
Free

Perfect for trying out Captchacat

  • 1 site
  • 1,000 validations/month
  • 7 days stats retention
  • Basic analytics
  • Auto-solve mode
  • IP blacklist
  • 2FA
Get Started
Starter
€9 /mo

For small projects and personal websites

  • 1 site
  • 5,000 validations/month
  • 30 days stats retention
  • Auto-solve mode
  • IP blacklist
  • 2FA authentication
  • Rate limiting
  • Country blocking
  • Custom widget appearance
Get Started
Business
€29 /mo

For growing companies with moderate needs

  • 25 sites
  • 15,000 validations/month
  • 90 days stats retention
  • Advanced analytics
  • Rate limiting
  • IP whitelist & blacklist
  • Custom widget appearance
  • Country blocking
Get Started
MOST POPULAR
Professional
€79 /mo

For businesses with advanced security needs

  • 50 sites
  • 50,000 validations/month
  • 1 year stats retention
  • Country blocking
  • Configurable security
Get Started
Enterprise
Contact Sales

Custom solutions for large organizations

  • Unlimited sites
  • Unlimited validations
  • Unlimited stats retention
  • Priority support
  • Feature requests
  • Custom integrations
Contact Sales

Ready to protect your applications ?

Start protecting your website with privacy-first bot detection today.

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GDPR Compliant
Hosted in Germany