Best 11 WordPress Captcha Plugins
Best 11 WordPress Captcha Plugins

“I wanted to Sign in to a new website that got my interest, but I could not understand the Captcha, I quit and decided to go to another website”. Have you ever faced this with your WordPress website and wonder which captcha plugin should be used for simplicity? There’s no need to be confused – we’ve all done it. 

While making a website, it is vital to make a website that is safe for both users and website owner. Everybody is aware of spammers flooding the internet. They misuse the website and keep posting spam comments. As a developer or designer it is vital for you to understand what is a Captcha, why are they used and where. So, In this article, we are shedding some light on What is Captcha, Why they are used, Where are they used and also a list of Top 11 WordPress Captcha Plugins. 

CAPTCHA Full form and Meaning 

‘Completely Automated Public Turing Test to Tell Computers and Humans Apart’, short CAPTCHA. Computers are smart but not as smart as humans. A robot/computer cannot fill Captcha. Hence, Captcha is used to differentiate between human and computer. 

Why is Captcha Used 

It is clear Captcha is used to differentiate between humans and bots. The reason captchas are used is to protect websites from fraud users. Apart from differentiating between human and bots, it helps in preventing spam comments and does not allow spammers to misuse the website. 

Captcha in Forms 

Captcha is used in Forms all over the web. Forms are used to fill information that verifies who the user is, but spammers are always on the lookout to break into websites. Nowadays all website owners request captchas for their forms. Be it registration, comment, log in, lost password or sign up/in form. Even the search engine like Yahoo also uses Captcha in their login form. 

 

Best WordPress Captcha Plugins Comparison Chart 

Plugin Active Installs Rating Compatible with WordPress Contact Form 7 Compatible WooCommerce Compatible 
Really Simple Captcha 1 Million+ 4.3 4.5.4 Yes No 
Captcha by BestWebSoft 300,000+ 4.5 4.7 Yes Yes 
SI CAPTCHA Anti-Spam 300,000+ 4.1 4.6.1 No No 
Google Captcha (reCAPTCHA) by BestWebSoft 60,000+ 4.4 4.7 Yes (pro version) Yes 
Math Captcha 20,000+ 4.2 4.7 Yes No 
No CAPTCHA reCAPTCHA 10,000+ 4.4 4.4.5 No Yes 
Conditional Captcha 10,000+ 4.7 4.7 No No 
Captcha Code 10,000+ 4.9 4.6.2 No No 
Advanced noCaptcha reCaptcha 5,000+ 4.8 4.6.1 Yes Yes 
Captcha Bank – Best Captcha Plugin 4,000+ 3.9 4.7 Yes Yes 
Uber reCaptcha 4,000+ 5 4.7 No No 

 

List of  Best WordPress Captcha Plugins 

Below is a list of Top 11 best captcha plugins for WordPress. Though there are plenty still we have picked out the best so you can add Captcha to WordPress and protect your website. 

Really Simple Captcha 

Nowadays captchas are used daily by internet users. WordPress plugins make the problem easy like Really Simple Captcha which is the best WordPress Captcha plugin with more than +1 million active Installs. Really Simple Captcha is true to its name. Unlike other captchas that use PHP ‘Sessions’ causing conflicts, Really Simple uses temporary files making it the best captcha plugin for WordPress. 

How it works 

The process is quite simple. In the first step, an image file is created and then a text file with the correct answer. Both files use the same prefix ie: “a7hk3ux8p.png” and “a7hk3ux8p.txt.” Here the correct answer is ‘K5GF’. The answer is coded in the image answer of “a7hk3ux8p.png”. So the Plugin only had to calculate the hash of ‘K5GF’ and confirm from the text file. On confirmation, the Captcha is accepted. No doubt the best WordPress contact form plugin with Captcha. 

How it’s used with other plugins. 

Plugin Developers can follow these instructions: 

Create an instance of Really Simple class 

$captcha_instance = new ReallySimpleCaptcha() 

The instance variables can be changed like this: 

// Change the background color of CAPTCHA image to black $captcha_instance->bg = array( 0, 0, 0 ); 

If you are interested in more variables, you can view the really- simple- captcha.php. 

$word = $captcha_instance->generate_random_word(); 

You can also generate an image in the temporary directory under a corresponding text file. 

$prefix = mt_rand(); $captcha_instance->generate_image( $prefix, $word ); 

On showing the image, you can receive the answer from the respondent. 

To check if answer is correct 

$correct = $captcha_instance->check( $prefix, $the_answer_from_respondent ); 

You can continue if the $ Correct is true. If not then you have the option to block the respondent as it is probably a bot. 

Last, erase all the temporary files, as they are of no use anymore. 

$captcha_instance->remove( $prefix ); 

You can see a live preview by seeing the Contact Form 7 from this link: http://contactform7.com/

Captcha by BestWebSoft (This plugin is not recommended as per a critical vulnerability found by Wordfence)

Captcha by BestWebSoft wordpress captcha plugin

It is very important and easy to add Captcha to WordPress. Captcha plugin is ideal to protect your website from spammers. The captchas are math oriented hence, are tricky for humans alike. You get many benefits like: 

Free features 

Add Captcha to forms 

Able to improve the captcha protection by using math, image or letters 

Hide Captcha for registered users 

Time limit for submitting Captcha can be set 

Able to refresh Captcha 

Hand-drawn images available 

Captcha title and notification are editable 

Merge any IP address via the Limit Attempts plugin along the Captcha whitelist 

Custom code can be added using the settings page of the plugin 

Compatibility with all the WordPress version 

No need to modify the code for fast setup 

Detailed tutorial available in text and video format 

RTL and Multilingual ready 

The pro version is compatible with Contact Form 7, BuddyPress and WooCommerce. 

SI CAPTCHA Anti-Spam 

 SI CAPTCHA Anti-Spam wordpress captcha plugin

SI Captcha plugin is the best captcha plugin for WordPress. It is ideal as an anti-spam plugin and is used as a captcha plugin for WordPress like in registration form, lost password, and login forms. Websites use it to protect spam comments from bots and it works perfectly with Akismet. 

 

Google Captcha (reCAPTCHA) by BestWebSoft 

 Google Captcha wordpress captcha plugin

Google Captcha is a Recaptcha Captcha plugin in WordPress that prevents spam entries yet allows authentic users to access with ease. The user just has to verify whether is human or not. 

Free features 

Add Google Captcha Recaptcha to any form 

Able to hide 

Option to hide Google Captcha (reCAPTCHA) for users having whitelisted IP addresses [NEW] 

You can check the validity of keys from the admin panel 

Google Captcha (reCAPTCHA) themes available for version 1 include red (default), white, black glass, white and clean 

Version 2 has a light theme as default and dark ad optional. 

For some user usage the Google Calendar (reCAPTCHA)can be hidden 

Google Captcha (reCAPTCHA) supports both version 1and 2 

Custom code can be added via the settings page of the plugin 

Compatibility with all latest WordPress versions 

Easy settings 

Easy to read documents and videos for tutorial 

RTL and Multilingual ready 

Pro Features include: 

Ability to select language yourself for Google Captcha (reCAPTCHA) 

All subsites of the network are configurable 

For version 2 size is configurable 

Compatibility with: 

Subscriber 

Contact Form 7 ( since v3.4) 

Multilingual 

Compatibility with WooCommerce: 

Lost password form 

Checkout billing form 

Registration form 

Login form 

Compatibility with BuddyPress: 

Comments from 

Register firm 

Create group form 

 

Math Captcha 

 Math Captcha wordpress captcha plugin

Math Captcha is probably the best WordPress contact form plugin with Captcha available in WordPress plugins. Simple math captcha has to be resolved to access the website. 

Features 

Able to choose which form requires math Captcha 

Select from -, +, / or x options 

Ability to display in characters or numeric 

Able to show more than one Captcha 

Block spam bots from accessing wp.coment.post.php 

.pot file available for transfer 

 

No CAPTCHA reCAPTCHA 

 No CAPTCHA reCAPTCHA wordpress captcha plugin

This is probably the simplest captcha plugin for WordPress available with which you can add the new NO CAPTCHA reCAPTCHA available by Google for your WordPress registration, comments or log in for sites including the BuddyPress registration form. 

Features 

Able to choose activation if Captcha in registration, comments, log in and BuddyPress registration form 

Theme options for captcha 

User language auto- detected 

Preferable Plugins 

WooCommerce: protection from spam in registration, password reset and log in from 

ProfilePress: A WordPress form builder that assists in making customized logins based on short-code. 

OmniPay: It is the main access to many payment providers such as PayPal, WePay, Authorize.net and acts as an extension for WooCommerce and Easy Digital Downloads. 

Better WePay payment access for WooCommerce: WooCommerce powered stores are able to access not only credit cards but bank account payments for users using WePay. 

 

Conditional Captcha 

 Conditional CAPTCHA wordpress captcha plugin

This captcha plugin for WordPress offers two modes: Basic and specially enhanced for Akismet. 

Basic: Only new commentators see Captcha. 

Akismet Enhanced Mode (recommended): If Akismet feels a comment is a spam, it displays a Captcha to verify if human or not. 

This plugin is based on a simple text format. To get a more robust (requires free API key)you can use reCAPTCHA as well. 

 

Captcha Code 

 Captcha Code wordpress captcha plugin

Add Captcha to WordPress via Captcha Code Plugin and block spam or bots from accessing your website. The user has to type the code shown in the image to get access. Ideal for registration lost password and comments form. 

Features 

Admin can decide Captcha should be viewable or not 

Admin selects the type of letters (small, capital or both) to be displayed 

Admin selects setup of Captcha (alphabet, numeric or both) 

Translation available 

 

Advanced noCaptcha reCaptcha 

 Advanced noCaptcha reCaptcha wordpress plugin

If you want to have No Captcha in your forms then this is the plugin for you. Be it WooCommerce, Contact Form 7 or BuddyPress this is the plugin for you. This plugin implements with other plugins easily. 

Show noCaptcha on (apart from WooCommerce and contact form 7): 

FEP Contact Form 

Multi-site user sign up 

bbPress reply to topic 

Options 

Language and theme are changeable 

Size is adjustable 

 

Captcha Bank – Best Captcha Plugin 

 Captcha Bank - Best Captcha wordpress captcha plugin

Just like its name, you can bank your money on Captcha Bank Plugins security. You will forget what is spam once you install this plugin. Not only spam but bots will also not be able to access your website. 

Features 

Simple math operations 

Customized text Captcha 

Make Captcha by adding lines, blur images etc 

Make Captcha case sensitive 

Decide where to show Captcha 

Captcha supports Contact Form 7, BuddyPress and WooCommerce 

Email notification available 

 

Uber reCaptcha 

 Uber reCaptcha wordpress captcha plugin

To say this is the best WordPress Captcha plugin is an understatement. This is probably the most useful Plugin of all. Uber takes care of spam right to its roots. 

Features 

The plugin supports audio and images 

Generate Recaptcha image and predefined audio type available 

Recaptcha protection available for WordPress 

Recaptcha protection available for WordPress Comments form and WordPress recover password form 

How to Install a CAPTCHA Plugin 

For Demonstration purposes, We are going to show how you can install a Simple Captcha plugin for your WordPress website and keep spam away. Here are the Steps to Installation: 

Automatically install via Plugins. From the WordPress menu select AddNew. You can also upload the Captcha folder directly to the /wp-content/plugins/ directory. 

From the WordPress Plugins menu activate the plugin. 

Updates automatically. If prompted click on “Upgrade Automatically”, via the Admin menu. If you ever require to manually update just deactivate, then uninstall and reinstall the new version. 

Bonus WordPress Captcha PluginWp-Bruiser {no- Captcha anti-Spam} 

Since we are on eradicating spam and bots, here is a Plugin that does not have Captcha but will be helpful if you want protection without captcha. 

The plugin is based on algorithm data and protects your website against bots and spam. Once installed it tirelessly tackles all the spambots and any brute force filtration giving you a secure website. The plugin is packed with features and brute force protection. 

 

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