How to use Contact Form 7 reCaptcha to cut spams in WordPress?

Last Updated: October 20, 2026

Contact Form 7 reCAPTCHA adds Google’s reCAPTCHA protection to your Contact Form 7 forms. It cuts down on spam by stopping bots from submitting forms on your website. reCAPTCHA is a free Google service, and you can integrate it with the Contact Form 7 plugin in just a few clicks.

How Does reCaptcha Work

To use reCAPTCHA on your website, you first need to generate API keys for your site. You then use these keys to connect reCAPTCHA to your forms.

Contact Form 7 reCaptcha

Contact Form 7 comes integrated with reCaptcha. All you have to do is to add your reCaptcha keys in Contact > Integration section of your WordPress dashboard.

You may like to read our article Contact Form 7 Plugin where we explain how to use CF7 in WordPress.

reCaptcha Key

To generate reCAPTCHA API keys for your site, first log in to the reCAPTCHA website with your Google account.

Next, the Register a new site form appears. In the Label field, enter any name you like, such as mykeys. In the Domains field, enter your site’s domain name without “http” or “www”.

Press Register button to generate your keys. Two keys will be generated and these will be Site Key and Secret Key.

Next, in your WordPress dashboard, go to Contact > Integration and click the Configure Keys button. This takes you to a page where you enter the Site Key and Secret Key.

Copy and paste your reCAPTCHA keys into the matching fields.

That’s it! reCAPTCHA is now active in your Contact Form 7 plugin, helping protect your forms from spam and bots. Keep your reCAPTCHA keys private and don’t share them with anyone.

What is a Spam

Once your website is live on the internet, spammers will start flooding your forms with unwanted messages, such as ads for dubious products, get-rich-quick schemes, and insurance offers.

CloudFlare CDN offers free spam protection to everyone. Other than this, it also provides speed and security to your website, kindly check – What is CloudFlare and how it gives Speed and Security to your website?.

Getting so many unwanted messages is frustrating. What may surprise you is that most of them don’t come from real people. Your contact form is being filled in by computer programs known as spambots.

Fortunately, reCAPTCHA can stop spam by preventing these bots from filling in and submitting your forms.

What is reCaptcha

reCAPTCHA is a free service from Google that uses advanced algorithms to stop automated programs like spambots from abusing your site, while letting real visitors pass through without trouble.

reCAPTCHA adds a quick verification test to your forms. For example, it may show a set of images and ask you to select all the ones that contain a particular object, such as traffic lights. Bots typically fail this test, while humans pass it.

Some examples of question which reCaptcha asks are:

Select all images with grass.
Select all images below that match this one.
Select all images with a construction vehicle.

reCaptcha for Social Cause

Google also uses reCAPTCHA for more than spam protection. Over the years, it has helped digitize books, improve maps, and train machine learning models. How? Every time a person solves a challenge, their answer can be recorded and used as labeled data. That data helps machines learn to recognize text, street numbers, and objects in images, which supports the development of artificial

Computers can’t always read the words in scanned books, so reCAPTCHA once showed those words to people to decipher. This helped speed up the digitization of books. In the same way, reCAPTCHA has presented text from Street View images, such as street signs and house numbers. When people verify that text, it helps make Google Maps more accurate.

Adding reCAPTCHA to Contact Form 7 helps keep spammers and bots away from your site. If you found this article useful, share it on Facebook and X (Twitter) so other website owners can protect their forms too.