Top 6 WordPress Captcha Plugins for Registration, Comments and Login

One of the nightmare things that is related to a website is spam comments. Once a site allows comments from users, then it is likely to get dozens of spams every day or even more, depending on the popularity of the website.

These comments are done to gain a backlink on automation by other websites. They are done on automation because no human being who is running an excellent website will have time for such spam comment activities. Still, it isn’t that hard to find one exception.

Since, we need to keep our head straight and stay away from those spam filtering and deleting work, so, we need to control and somehow stop spam comments to enter our website.

Now, since your website is driven by WordPress platform, so you should keep either Akismet or any other spam filter plugin activated. Any of such good plugin will do half of the work, and that too on automation.

But, still, the job isn’t done completely. You still need to filter out humanly done spamming. One of the easiest and coolest way for that is by adding captcha.

A captcha is a simple (or maybe tough) looking code that needs to be entered again in the neighbored text box. This is how you can confirm whether the commenter is a human being or not because it is tough for a bot to type in dynamically changing captcha code.

There are few more filters that can be added to ensure that even a human being isn’t able to inject a spam comment into your website. Luckily, in WordPress we can keep all the comments in moderation that is a real good safeguard but still, we need to take manual care of each comment.

Now since you have understood the reason you need to implement a captcha on your blog and its importance, so here are few top WordPress captcha plugins.

Why on Earth did you think that I’d make you type or insert a captcha activation code manually? We got plugins to take care of those things, right? But, we just need to find a better and genuine one.

Also read: Best Anti Spam Blocking Plugins to Protect your WordPress Comments

For your ease, I’ve arranged them in an order where the best plugin (according to me) is at the top.

#1 Really Simple CAPTCHA

Really Simple CAPTCHA Plugin

As the name suggests, it is simple to use but still tough on spammers. It inserts a very light weight code that does the work in the background on its own. Of course, you can do few related settings either using its control panel or even by create codes and inserting them as per your requirement (useful for developers).

When I and the plugin itself said that it’s simple, then you should believe it. Do check it out on your own, after all, its over one million users can’t be wrong. It can also integrate with Comment Form section.

Full Details & Download

#2 Google Captcha (reCAPTCHA) by BestWebSoft

Google Captcha reCAPTCHA

Now this one offers features as of above one but with a unique option as well. Once you are aware that one reader is loyal to your blog and never leaves any spam, then you can disable the Captcha formalities for him. It is a small feature, but it can really increase the user experience. The plugin makes use of a source code that is protecting the web since years, and so it is easier for us to believe it.

Full Details & Download

#3 SI CAPTCHA Anti-Spam

SI CAPTCHA Anti Spam Plugin

There are few reasons why this plugin is a top choice by millions of users around the WordPress community. It comes with valid HTML code; it is available in different international languages, and it covers section 508 and WAI accessibility Validation. All these means that it is completely genuine and truly have a legit source code.

It also makes use of Open-source free PHP Captcha library that is the main source of all tough and medium-ranged codes for filtration. Installing, activation and using it is simple and within few minutes you will easily forget about it, as it will be working on its own in the background then. If your blog allows trackbacks and pingbacks, then this plugin supports them too. Do check it out!



You can keep it activated at comment and registration sections. Any bot that is trying to prove itself a human can be filtered out by this plugin, and I’m sure you will have a peace of mind after enabling it. It also comes with a dedicated widget that can further help you to filter out human being readers.

#5 Math Captcha

Math Captcha WordPress Plugin

In many websites, I do find these really interesting Captcha, which only asks me basic mathematical questions like addition, subtraction, etc. This is really simple and sweet if you do want to keep spammers out of the view while also maintaining the user experience for genuine users.

#6 Fun Captcha WP Plugin

Fun Captcha WP Plugin

If you are one of those guys who is always trusting only the paid services, then this is the premium plugin available at $17, and you can use it to stop those unwanted comments and links. It comes with drag and drop control panel and works on almost any device (kind of responsive) and browsers.

If your website allows user registration, then this plugin works on those special gateway pages as well along with a proper management for lost password and even lost comments. You can check its Live Preview over here.


In short, you need to keep one of the above-mentioned plugins activated on your blog, and this is how you will be making it tough for a spammer to enjoy filtering your website with its unwanted comments.

I do hope that my list of best captcha plugins above, helped you and you’re even going to share it with all your fellow bloggers. In case you need any assistance on the related topic, our team will be available in the discussion section below. Peace.

Editorial Staff

Editorial Staff at 85ideas is a team of WordPress experts led by Brian Harris. Here to share amazing tuts, guides and collections.

  • BuildupYouth
    Posted at 03:17h, 26 November Reply

    Liked your article and really you have mentioned an amazing list of captcha plugins.. After reading your reviews we recommend and use Google Captcha (reCAPTCHA) by BestWebSoft. Thanks for the list.

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    Posted at 03:46h, 20 September Reply

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