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Google Captcha

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Taught by:

Derek Siu

Google captcha is a fantastic FREE way to prevent spam and bots. In this step by step tutorial, learn how to add Google Captcha (V2) to your ‪Webflow‬ site. This includes how to add the secret and site key as well as a bonus tip on how to make the Captcha compact especially on mobile devices using attributes (data-size = compact). There is even a custom code (see below) that allows you to have the standard Captcha on Desktop then the compact version on mobile.

<script>

 document.addEventListener("DOMContentLoaded", function () {

   function updateRecaptchaSize() {

     // Select all elements with the 'data-size' attribute

     const recaptchas = document.querySelectorAll('[data-size]');

     

     if (recaptchas.length > 0) {

       const isMobile = window.matchMedia("(max-width: 767px)").matches; // Adjust breakpoint as needed

       

       // Update each reCAPTCHA's data-size attribute

       recaptchas.forEach(recaptcha => {

         recaptcha.setAttribute("data-size", isMobile ? "compact" : "normal");

       });

     }

   }

   // Run on load

   updateRecaptchaSize();

   // Run on resize

   window.addEventListener("resize", updateRecaptchaSize);

 });

</script>

Copy Code

Understanding Google CAPTCHA: How It Works & Why It Matters for Your Website

What is Google CAPTCHA?

Google CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a security tool designed to prevent bots and automated scripts from accessing websites. By requiring users to complete simple tasks, such as selecting images or checking a box, CAPTCHA helps differentiate between humans and bots.

Why is Google CAPTCHA Important?

1. Prevents Spam & Fraud

Bots can fill out forms, submit fake comments, and engage in fraudulent activities. CAPTCHA stops automated scripts from misusing website functionalities.

2. Enhances Website Security

Brute force attacks, credential stuffing, and data scraping are common cyber threats. CAPTCHA helps mitigate these risks by blocking automated access attempts.

3. Protects User Data

By preventing unauthorized access, CAPTCHA plays a crucial role in securing user accounts and sensitive information.

Different Types of Google CAPTCHA

1. reCAPTCHA v2

  • Users check a box labeled "I'm not a robot."
  • If suspicious activity is detected, additional image-based verification is required.

2. reCAPTCHA v3

  • Works invisibly in the background.
  • Uses risk analysis to assign a score based on user behavior, determining if they are human.

3. reCAPTCHA Enterprise

  • Advanced security features for businesses.
  • Customizable settings to adapt to unique security needs.

How to Implement Google CAPTCHA on Your Website

Step 1: Sign Up for reCAPTCHA

Step 2: Integrate CAPTCHA with Your Website

  • Add the CAPTCHA script to your site's <head> section.
  • Modify your form code to include CAPTCHA validation.

Step 3: Verify Implementation

  • Test your CAPTCHA setup to ensure it's working correctly.
  • Adjust settings to balance security and user experience.

Best Practices for Using Google CAPTCHA

  • Optimize for UX: Avoid excessive CAPTCHA prompts that frustrate users.
  • Use reCAPTCHA v3 if possible: This version runs invisibly without disrupting user interactions.
  • Regularly Monitor Logs: Check for unusual activity and fine-tune CAPTCHA settings accordingly.

Conclusion

Google CAPTCHA is a crucial tool for enhancing website security, preventing spam, and ensuring a safe browsing experience. By choosing the right version and implementing best practices, you can protect your site while maintaining a seamless user experience.

Need help integrating Google CAPTCHA on your website? Contact us today for expert assistance!

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