Top "Recaptcha" questions

For questions about the reCAPTCHA service: Designed to protect against spam and abuse by blocking bots while allowing valid users access.

Using reCAPTCHA on localhost

I'm developing a website using PHP and I want to make a human verification in one of the sessions. For …

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How can I validate google reCAPTCHA v2 using javascript/jQuery?

I have a simple contact form in aspx. I want to validate the reCaptcha (client-side) before submitting the form. Please …

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reCAPTCHA ERROR: Invalid domain for site key

I have implemented my reCAPTCHA in line with as is shown in the example. I have this script in the …

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How to Reload ReCaptcha using JavaScript?

I have a signup form with AJAX so that I want to refresh Recaptcha image anytime an error is occured (…

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How to hide the Google Invisible reCAPTCHA badge

When implementing the new Google Invisible reCATPTCHA, by default you get a little "protected by reCAPTCHA" badge in the bottom …

javascript recaptcha
How does Google reCAPTCHA v2 work behind the scenes?

This post refers to Google ReCaptcha v2 (not the latest version) Recently Google introduced a simplified "captcha" verification system (video) …

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Google reCAPTCHA: how to get user response and validate in the server side

I am doing a Java (JSP + Servlet) web application (I understand that this question is technology-independent). I hope to use …

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How to Validate Google reCaptcha on Form Submit

Recently, Google completely overhauled their reCaptcha API and simplified it to a single checkbox. The problem is, I can submit …

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How do I show multiple recaptchas on a single page?

I have 2 forms on a single page. One of the forms has a recaptcha displaying all the time. The other …

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ReCaptcha API v2 Styling

I have not had much success finding how to style Google's new recaptcha (v2). The eventual goal is to make …

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