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A Step-by-Step Guide to Securing WordPress with Cloudflare Turnstile CAPTCHA

Cloudflare Turnstile in WordPress

Are you tired of dealing with spam and automated attacks on your website? It’s now time to say goodbye to the frustrating experience of CAPTCHA and hello to Cloudflare Turnstile. This innovative solution offers an invisible alternative to traditional CAPTCHA, providing robust protection against spam, abuse, and automated attacks. What’s more, Turnstile is available to anyone, anywhere on the Internet, who wants to replace CAPTCHA on their site. You don’t even need to be a Cloudflare customer or send traffic through their global network – you have to simply call a simple API and enjoy the benefits of Turnstile’s advanced security features. In this article, we’ll take a closer look at what makes Turnstile so effective, how it can help you protect your website, and how to install Cloudflare Turnsile in WordPress.

What is Turnstile and How Does It Work?

Turnstile is a powerful tool that offers an alternative to traditional CAPTCHA. Unlike CAPTCHA or its Google’s adaptation reCAPTCHA, Turnstile uses a suite of non-intrusive browser challenges that are chosen based on telemetry and client behavior during a session. This approach not only enhances security but also ensures a smooth user experience. By analyzing client behavior, Turnstile can quickly identify bots and other automated threats, preventing them from accessing your site.

Turnstile was created by Cloudflare, a US-based company that provides a wide range of services related to website performance, security, and reliability. Cloudflare’s mission is to help build a better Internet by providing its customers with tools to improve the performance and security of their websites and online applications. Its services include content delivery network (CDN), DDoS mitigation, internet security, DNS management, and other related services.

Cloudflare Turnstile CAPTCHA

Rather than offering a single alternative to CAPTCHA, Cloudflare has developed a dynamic platform for testing and rotating multiple challenges. With Turnstile, Cloudflare can adapt to the challenge presented to each individual visitor and browser, providing a tailored and effective security solution. To achieve this, Turnstile uses a series of small, non-interactive JavaScript challenges to gather signals about the visitor’s environment and behavior. These challenges include proof-of-work, proof-of-space, and probing for web APIs, among others. By analyzing these signals, Turnstile can fine-tune the difficulty of the challenge to match the specific request, making it more difficult for automated attacks to bypass security measures. This allows Turnstile to finely adjust the difficulty of the challenge to match the specific request, providing a customized and effective security solution for each individual visitor.

In addition to its suite of non-intrusive browser challenges, Turnstile features advanced machine learning models that can detect common features of successful visitors who have passed a challenge in the past. These models enable Turnstile to adapt to individual visitors and provide tailored security solutions based on their behavior. The initial challenges given to visitors may differ in complexity but are designed to execute efficiently. By leveraging machine learning and targeted challenges, Turnstile can quickly and accurately identify bots and other automated threats, preventing them from accessing your site and compromising your security.

CAPTCHA vs Turnstile: Which is the Better Security Solution for Your Website?

As a security measure, CAPTCHA is a commonly used tool by websites to prevent spam, abuse, and automated attacks. CAPTCHA is, in fact, an acronym for ‘Completely Automated Public Turing Test to Tell Computers and Humans Apart.’ The technology presents users with a challenge, usually a distorted image or text, to verify that they are human and not an automated script or bot. There are different types of CAPTCHA tools, like reCAPTCHA, hCAPTCHA, and Akismet, created by different companies. With its proven effectiveness in preventing automated attacks, Google reCAPTCHA is a widely popular security solution. However, its impact on user experience and potential frustration for users remains a significant concern.

One of the primary complaints about CAPTCHA technology is that it can waste users’ time. Solving a CAPTCHA challenge can be a frustrating and time-consuming experience, particularly for users who may have difficulty deciphering the distorted text or identifying images in the challenge. For users who need to solve multiple CAPTCHAs in a single browsing session, such as when filling out a form or creating an account, the time spent on CAPTCHA challenges can add up quickly and become a significant source of frustration. Did you know that humans spend approximately 500 years each day solving CAPTCHAs worldwide?

Captcha Example

Another significant disadvantage is its poor accessibility, as it can be impossible for users with visual disabilities to solve CAPTCHA challenges. The use of CAPTCHAs can put a strain on mobile data plans, leading to slow page loads and frustrating user experiences. Cultural bias is another issue associated with CAPTCHA challenges. One type of CAPTCHA challenge involves presenting the user with an image and asking them to select certain objects that appear in the image, such as cars, animals, or street signs. However, the objects that are presented in these challenges may be more familiar to users from certain regions, which can create a cultural bias in the CAPTCHA challenge. For example, if a CAPTCHA puzzle requires users to select images of U.S. taxis, users from other countries of the world may not be familiar with this specific type of vehicle, making the challenge more difficult or impossible for them to solve.

Google recaptcha

More importantly, using CAPTCHA technology often comes with a hidden tradeoff that many websites may not be aware of. CAPTCHA works by collecting data from a user’s computer. This may include data like user’s IP address, browser type and settings, device type and settings, and cookies. This type of data allows Google to gain insights into user traffic. As CAPTCHA is increasingly used by more websites to prevent spamming, Google’s access to this data has expanded significantly. While Google claims that this information is not used for advertising purposes, it’s important to note that Google is ultimately an advertising company, and using CAPTCHA may indirectly result in giving your website visitors’ data to an ad sales company.

Additionally, there are numerous websites that provide both human and AI-supported CAPTCHA-solving/bypassing services, some of which charge as little as $0.50 per thousand solved challenges. Additionally, according to recent research, AI-based attacks have successfully cracked CAPTCHAs employed by some of the most popular websites worldwide. These findings raise concerns about the reliability of CAPTCHA technology and the need for more advanced security solutions like Cloudflare Turnstile.

These Don't Even Work. Why Do We Still Use Them?

What Makes Turnstile Better?

Turnstile is a better solution compared to traditional CAPTCHAs in several ways. One significant advantage is that it provides a better user experience. Instead of presenting visitors with a visual puzzle that can be frustrating and time-consuming, Turnstile confirms their authenticity on the fly in a way that is entirely transparent to them.

Another area where Turnstile stands out is its privacy protection. While some other CAPTCHA options collect data for ad retargeting, Turnstile never harvests any visitor data for such purposes. Cloudflare has teamed up with Apple to introduce Private Access Tokens, which allow visitors to prove they are human without submitting personal data or completing CAPTCHAs. By working with device manufacturers who already possess the data that could validate a device, Cloudflare can confirm data without collecting, touching, or storing it. Private Access Tokens are integrated into Turnstile, minimizing data collection by requesting Apple to validate the device instead of directly interrogating it.

In terms of speed and convenience, Turnstile is a clear winner. It can be deployed in just a few minutes with a quick code snippet and is entirely free of charge. Overall, Turnstile provides a faster, more private, and better experience for both website owners and visitors alike.

How to Install Cloudflare Turnstile in WordPress

Adding Cloudflare’s Turnstile widget to WordPress is simple and straightforward.

First login to your WordPress site. Scroll down the left-side bar menu of the WordPress dashboard and click on Plugins. Select Add New.

In the search bar on the upper right corner, search for Simple Cloudflare Turnstile. Choose the plugin and click Install.

Next, click on the Activate button.

You will see a screen as below, which will require a Site Key and a Secret Key.

Open another tab in your browser and go to To install Cloudflare Turnstile in WordPress, you have to have a Cloudflare account. This doesn’t have to be a paid account. You can simply create a free account at Cloudflare.

Once you sign up, you will get access to Cloudflare dashboard. When you scroll down the left sidebar menu, you will see Turnstile – click on it.

Now click on Add Site.

Fill in the Site Name and Domain Name.

Next, choose the Widget Type

There are 3 types of widgets: Managed, Non-interactive, and Invisible.

1. Managed: The visitor will see a loading animation while this process occurs, and in most cases, a non-interactive challenge will run in the background to minimize disruption. If the browser passes the test, the visitor will see a simple ‘Success’ message. Sometimes, Cloudflare may decide that an interactive challenge is necessary for increased security. But, the visitor only has to check a box instead of completing a puzzle, making it easier than traditional CAPTCHAs based on puzzles.

2. Non-interactive: As non-interactive challenges are designed to run directly in the browser, the visitor does not need to take any further action. When the challenge is complete, visitors will see a loading animation and a confirmation of ‘Success’.

3. Invisible: If you choose the ‘Invisible’ option, the CAPTCHA will be completely hidden from your visitors. This can prevent confusion and keep your WordPress theme clean without clutter.

Cloudflare recommends the ‘Managed’ widget, which analyzes the browser’s request and selects the appropriate challenge. Unless you have a compelling reason to choose otherwise, it’s wise to opt for managed CAPTCHAs. They provide strong security with minimal impact on the visitor experience.

Once you have selected your option, click Continue.

Now Cloudflare will give you the Site Key, Client Side Integration Code, and Secret Key.

Go back to WordPress, copy the Site Key and paste it. Do the same for Secret Key.

In the General Settings of the Turnstile plugin, you can select options like Theme, Custom Error Message, and Disable Submit Button.

In the next section, you can select where you want to enable Turnstile – in your WordPress forms, comments, register, password resets, WooCommerce login, cart, etc.

Now Save Changes.

Click on the green “Test API Response” button. If you have followed the steps above and entered the correct keys, you will get validation as shown below:

To test the widget, go to a form on which you have enabled the Cloudflare Turnstile widget, such as a WordPress comment or a WooCommerce cart. The widget will analyze your behavior to verify if you are a human. If the widget confirms that you are human, it will display “Success,” and you can submit the form without any further interaction.

What are the Forms that Support Turnstile?

Turnstile can also integrate with third-party plugins. Here are some products that currently support Turnstile:



Form Plugins

Other Integrations


Installing Cloudflare Turnstile CAPTCHA on your WordPress site is a straightforward process that can greatly improve your website’s security and UX. With Turnstile, you can confirm that your visitors are human without subjecting them to the frustration of traditional CAPTCHAs. Additionally, Turnstile is designed to preserve visitor privacy and doesn’t harvest data for ad retargeting. By following the steps outlined in this article, you can easily enable Turnstile on your login, registration, password reset, comment, and WooCommerce forms. And with the variety of form plugins and integrations that Turnstile supports, you can customize your forms to fit your needs. Overall, Turnstile is a free and effective way to add an additional layer of security to your WordPress site.

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