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Best Free CAPTCHA WordPress plugins

So what is a CAPTCHA?

it is a computer program or system intended to distinguish human from machine input, typically as a way of reducing spam and automated extraction of data from websites. Hackers and spammer have made software programs to automatically spam the web or trying automatically send messages from your contact form or login to your admin page with using thousands of random passwords.

Why you need to use CAPTCHA?

WordPress by default allows to comment on articles, so spammers take this opportunity and use bots to automatically make comments to thousands of sites just to spam their links or products. This reduces your site’s quality and sometimes these links that are spammed redirect to illegal or dangerous websites.

If you are tired of getting those spam messages through your WordPress website and want some extra protection, adding a CAPTCHA is a very good idea. Although lots of people find them annoying, especially if you cannot read well the digits or if the captcha service use very difficult to read character even for a human but for a website owner it is a great extra level of security to keep it safe from spam. We strongly recommend to not use a service that is difficult to read.

Also using CAPTCHA can protect your admin login or your sign ups, from other automated hacing bots that use random technics of guessing passwords and etc.

Recently Google reinvented the CAPTCHA module, with a new user-friendly system No CAPTCHA reCAPTCHA so there have been lots of plugins released to make use of the simpler, less annoying but still very effective and secure Google reCAPTCHA system for WordPress. These plugins can be used for WordPress login, comment and registration forms.

If you, despite the annoyance, still want to add an extra safety by adding a CAPTCHA to your comment and contact forms, these are 5+ of the best free CAPTCHA plugins you can donwload from the WordPress.org catalog.

Below is a list of the best WordPress captcha plugins that we have found. Test and enjoy.

 

 

Captcha by BestWebSoft

With this WordPress captcha plugin user needs to do one of the three basic maths actions – add, subtract and multiply in order to submit data. This captcha can be used for login, registration, password recovery, comments forms. There is also a premium (paid version) version of the plugin, allowing compatibility with BuddyPress (Registration form, Comments form, “Create a Group” form) and Contact Form 7.

screeshots

     

 

SI CAPTCHA Anti-Spam

The SI CAPTCHA Anti-Spam plugin will give you an CAPTCHA field for forms, comments, registration, lost password, login for WordPress websites, WPMU and even BuddyPress. In order to post comments, register or sent an Email, users will have to type in the code shown in an image in the form.

Google Captcha (reCAPTCHA) by BestWebSoft

The Google Captcha plugin is also developed by BestWebSoft and allows you to implement the Google Captcha into web forms. The plugin uses the free Google CAPTCHA service that helps to digitize books, newspapers and old time radio shows. however, the captcha can also be used for login, registration, password recovery and comment forms.

There are some actions you can do with the Google Captcha plugin such as add Captcha to any form on your website, choose users for whom the captcha will be hidden and you can choose one of four standard Google Captcha themes.

 

WM Simple Captcha

If you are looking for a simple but yet customizable CAPTCHA plugin, the WM Simple Captcha is a good one. On the settings page of this plugin you can customize the way the captcha form will look like by changing width, height, characters and choose fonts. You can also change colors, change the label, enable a border and enable a refresh button.

The WM Simple Captcha plugin will allow you to choose what type of captcha is displayed to your users. You can choose from number and capñital letters, letters only, numbers only etc. Furthermore the plugin allows you to add custom error messages in your own languages.

 

No CAPTCHA reCAPTCHA

The No CAPTCHA reCAPTCHA plugin was one of the first plugins to include the new CAPTCHA module and service developed by Google. As mentioned before, Google reinvented the CAPTCHA system with an easier and more secure anti spam method with its No CAPTCHA reCAPTCHA service.

This plugin with the same name has been developed by AdeptPlus Media Company and has been downloaded over 1.600 times. Its a simple plugin for adding the new anti spam service from Google to WordPress login, registration and comment system. You can choose a special theme for the CAPTCHA and it will auto-detect the user’s language as well. You will need Site and Secret keys which can be obtained with the special link in the plugin.

 

 

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