A free, privacy-first CAPTCHA service that protects your website from bots without annoying your users.
Built by developers, for developers. No corporate surveillance, no paywalls, just protection.
No tracking cookies, no data selling.
Strong bot detection algorithms.
Served from edge locations.
3 lines of code to integrate.
Advanced bot detection powered by behavioral analysis and multiple challenge types
Silent behavioral analysis begins immediately. Mouse movements, scroll patterns, and timing are tracked.
AI calculates threat level based on 50+ behavioral signals. Humans pass silently, bots get challenged.
If needed, one of 9 challenge types is randomly selected. Users must pass 2-3 challenges based on risk.
Our multi-layer security system combines behavioral biometrics, machine learning, and cryptographic verification
Our patent-pending touch analysis technology detects human presence through:
Before any challenge is shown, we silently analyze user behavior:
Randomized challenges prevent bots from learning patterns:
Every verification is secured with industry-standard cryptography:
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Add PicturaCAPTCHA to your website with just a few lines of code. Works with React, Vue, Angular, and vanilla JS.
<!-- 1. Add the script -->
<script src="https://picturaai.sbs/api/captcha/widget.js" async defer></script>
<!-- 2. Add the CAPTCHA container -->
<div id="pictura-captcha" data-sitekey="YOUR_SITE_KEY"></div>
<!-- 3. Handle verification -->
<script>
function onCaptchaVerify(token) {
fetch('https://picturaai.sbs/api/captcha/verify', {
method: 'POST',
body: JSON.stringify({ token })
})
}
</script>Get started in minutes with our free CAPTCHA service and npm package support.