Websites using reCAPTCHA v2

About reCAPTCHA v2

reCAPTCHA v2 is Google's second-generation CAPTCHA solution that uses a checkbox ('I'm not a robot') or image challenges to verify that users are human, protecting websites from spam and automated abuse.

Identifying reCAPTCHA v2 in a website's stack reveals key decisions about its architecture, performance strategy, and development approach. Web Reveal automatically detects reCAPTCHA v2 and hundreds of other technologies by analyzing page source, HTTP headers, and JavaScript signatures—giving you instant insight into how any site is built.

Why do websites use reCAPTCHA v2?

Teams choose reCAPTCHA v2 because it fits neatly into modern workflows and solves real-world problems around performance, reliability, or developer productivity. Understanding which sites rely on it—and how widely it has been adopted—helps developers, marketers, and researchers make informed decisions when evaluating their own technology choices.

How does Web Reveal detect reCAPTCHA v2?

Web Reveal identifies reCAPTCHA v2 by inspecting a combination of signals: JavaScript global variables and library fingerprints loaded in the page, distinctive patterns in HTML markup and meta tags, HTTP response headers such as X-Powered-By and Server, asset file paths and CDN URLs, and cookie names set by the technology. This multi-signal approach minimizes false positives and ensures accurate results even when sites obscure their stack.

What can I learn from knowing a site uses reCAPTCHA v2?

Knowing that a competitor or industry leader uses reCAPTCHA v2 can inform your own architectural or vendor decisions. It also helps security researchers understand the attack surface of a given site, lets recruiters gauge a company's technical depth, and gives product teams data-driven insight into adoption trends across the web.

Frequently asked questions about reCAPTCHA v2

What is reCAPTCHA v2?

reCAPTCHA v2 is Google's second-generation CAPTCHA solution that uses a checkbox ('I'm not a robot') or image challenges to verify that users are human, protecting websites from spam and automated abuse.

How can I check if a website uses reCAPTCHA v2?

Enter the website's URL into the Web Reveal scanner. It will instantly analyse the page and report whether reCAPTCHA v2 is detected, along with every other technology in the site's stack.

Is reCAPTCHA v2 widely used?

Web Reveal has already detected reCAPTCHA v2 on a growing number of websites across different industries. Use the scanner to explore real examples and see how broadly it has been adopted.

What other technologies are commonly used alongside reCAPTCHA v2?

Scanning sites that use reCAPTCHA v2 often reveals complementary technologies in the same stack—such as CDNs, analytics platforms, CMS solutions, and JavaScript frameworks. Run a scan on any of the sites listed above to see the full technology breakdown.