Step 1: Obtain reCAPTCHA v3 credentials
-
Access Google reCAPTCHA page:
- Visit Google reCAPTCHA admin console.
- Log in with your Google account if necessary.
-
Register your website:
- Click on "V3" at the top to register a new key for reCAPTCHA v3.
- Fill out the form with your project name and domains where reCAPTCHA will be used.
-
Get site keys:
- After registering your site, Google will provide two keys: the site key and the secret key. These keys are essential for integrating reCAPTCHA v3 into your web application.
Step 2: Setup in your Next.js application
- Install necessary npm package:
npm install @react-google-recaptcha-v3
-
Create a reCAPTCHA component:
- Create a React component in your Next.js project to handle reCAPTCHA v3 logic.
// components/Recaptcha.js
import { useEffect } from 'react';
import { useGoogleReCaptcha } from 'react-google-recaptcha-v3';
const Recaptcha = ({ onVerify }) => {
const { executeRecaptcha } = useGoogleReCaptcha();
useEffect(() => {
const verifyCallback = async () => {
if (executeRecaptcha) {
const token = await executeRecaptcha();
onVerify(token); // Send token to backend or handle verification here
}
};
verifyCallback();
}, [executeRecaptcha, onVerify]);
return null; // This component doesn't render anything visible in the DOM
};
export default Recaptcha;
- Integrate the component into your form:
// contact.js
import Recaptcha from '../components/Recaptcha';
const ContactPage = () => {
const handleRecaptchaVerify = (token) => {
console.log('reCAPTCHA Token:', token);
// Send token to server for verification
};
return (
<div>
{/* Your form goes here */}
<form>
{/* Other form fields */}
<Recaptcha onVerify={handleRecaptchaVerify} />
<button type="submit">Submit</button>
</form>
</div>
);
};
export default ContactPage;
-
Server-side setup:
- In your backend (Node.js, Python, PHP, etc.), verify the reCAPTCHA v3 token using the provided secret key from Google.
Differences between reCAPTCHA v2 and reCAPTCHA v3
-
Interaction mode:
- reCAPTCHA v2: Requires users to solve a visible challenge like selecting images or entering text.
- reCAPTCHA v3: Operates in the background and evaluates user behavior to provide a risk score.
-
Visibility for users:
- reCAPTCHA v2: Is visible to users as it presents an explicit challenge.
- reCAPTCHA v3: Is invisible to users, working behind the scenes without requiring explicit user interaction.
-
Use of scores:
- reCAPTCHA v2: Does not generate a score; it only validates correct challenge responses.
- reCAPTCHA v3: Provides a score from 0.0 to 1.0 indicating the likelihood that the user is a bot.
-
Implementation:
- reCAPTCHA v2: Requires including a widget in the form and backend verification.
- reCAPTCHA v3: Integrates via a frontend API, with primary verification done on the backend using the secret key.
Additional considerations
-
Handling
null
inexecuteRecaptcha
: You may encounter cases whereexecuteRecaptcha
could benull
temporarily, especially during component initialization. Here's how to handle it:
// Inside useEffect in Recaptcha.js
useEffect(() => {
const verifyCallback = async () => {
if (executeRecaptcha) {
const token = await executeRecaptcha();
onVerify(token); // Send token to backend or handle verification here
}
};
if (executeRecaptcha !== null) {
verifyCallback();
}
}, [executeRecaptcha, onVerify]);
- Additional References: For more technical details or troubleshooting specific issues, you can refer to the official Google documentation for reCAPTCHA v3 or explore additional resources within the developer community.
This guide provides a solid foundation for effectively integrating reCAPTCHA v3 into your Next.js application, enhancing both security and user experience simultaneously.
Top comments (2)
Thank you for sharing in depth explanation about reCAPTCHA, along with comparison between reCAPTCHA v2 and v3
are you missing GoogleReCaptchaProvider implementation ?