Progress Telerik UI for ASP.NET AJAX

Captcha

  • A flexible website security component, the ASP.NET AJAX Captcha will protect your registrations, comments and polls from an automated spam. 
  • This control is part of the Telerik UI for ASP.NET AJAX suite along with 120+ full-featured components, designed to build web apps for any browser and device in half the time.
  • The Web Forms UI suite comes with document processing library, rich example-driven articles and extensive docs & demos to help you with your development.

Telerik UI for ASP.NET AJAX Suite
Nasa, Visa, Microsoft Fox, Samsung, IBM World Bank Group, Volvo
  • Various Protection Modes

    Choose between the captcha, an invisible textbox or a minimum form submission time to prevent automated form submissions.
    Telerik.Sitefinity.Libraries.Model.Image..AlternativeText
  • Audio Support

    Enable your captcha control to be read via a generated audio code, ideal in accessibility situations.
    Telerik.Sitefinity.Libraries.Model.Image..AlternativeText
  • Validation Summary

    Display your captcha errors in your existing validation summary control.
  • Custom Character Set

    Define which character set the captcha control will derive its image from.
  • Localization and Accessibility

    Provide a captcha interface for all of your users—regardless of preferred language. Thanks to the localization mechanism, based off of ASP.NET localization, you can serve the control in any language you have defined for your application.

Next Steps

Launch demos

See the UI for ASP.NET AJAX in action and check how much it can do out-of-the-box.

See pricing

Check out the offers. Purchase an individual suite or treat yourself to one of our bundles.

Download 30-day free trial

Try UI for ASP.NET AJAX with dedicated technical support.