What is OpenCaptcha?

OpenCaptcha is an open-source robust solution for enhancing website security through an API that generates captchas. This platform provides an adaptable API that integrates seamlessly with websites and applications, ensuring a user-friendly verification process. The OpenCaptcha service is designed to thwart automated bots while maintaining accessibility for genuine users.

Features:

  • Free and Unrestricted:

    No cost, no limits, no API key needed.

  • Multi-Language Support:

    Generates captchas in several languages, such as Mandarin, Arabic, Spanish, and more.

  • Customizable:

    Adjust captcha size and difficulty as needed.

Get started now:

 curl -X 'POST' \
    'https://api.opencaptcha.io/captcha' \
    -H 'Content-Type: application/json' \
    -d '{ "text": "hello" }'

Just a single line of code? That's right! You've made a captcha that says "hello". Need further details or want to explore more? Take a look at our complete API documentation on api.opencaptcha.io.

Got Ideas? Found Bugs?

OpenCaptcha values your input — it's open-source for a reason. Spotted a bug? Have an idea? Swing by our Project Page on GitHub and fire up an issue.