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11 Best Anti-Spam Plugins for WordPress to Keep Your Site Clean

As a website owner, isn’t it exhilarating to see a growth in incoming traffic? Sure it is! We all have experienced it! However, when your site begins to gain traction, spam will be one of the most unpleasant things you must tend to. When your website gets decent traffic, a host of unwelcome spammers join the party. Most of these spammers are automated spambots.

How bad could this be, you ask?

Well, let’s see. First off, if you don’t moderate comments (i.e., if you directly publish all comments without approval), tons of irrelevant content (spam) will fill your posts and pages. This will ultimately reduce your SEO score, thanks to automated spam bots.

You will need a lot of time if you decide to manually moderate each comment, checking them for spam and authenticity. This technique has another disadvantage. Spam comments will keep filling your WordPress database without requiring significant human effort. Spam comments weigh down your database and make it slow.

Of course, we have many solutions for this problem. This article lists the best anti-spam WordPress plugins. You can choose any of them (make sure you go through their features first) and enjoy the pleasures of hassle-free comment moderation.

We’ll begin with the simplest of WordPress spam protection plugins.

Best Anti-Spam WordPress plugins

1. Zero Spam

zero spam wordpress anti spam plugin

Registration and comment spam will be no more with the powerful Zero Spam. Zero Spam is effortless to use WordPress anti-spam plugin that offers you protection from spambots. What’s cool about this tool is that little work is necessary to install and activate it and make it work for you. Those two actions are all that is necessary to let Zero Spam do the magic.

If you are ready to eliminate the spam, start with the right foot forward and employ Zero Spam. Zero Spam features include no captcha, no moderation queues, caching plugins support, blocking fishy IP addresses, and comes with optional logging. Moreover, Zero Spam is compatible with numerous plugins, like Contact Form 7, Gravity Forms and BuddyPress, to name a few.

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2. Akismet

Akismet - most popular anti-spam WordPress themes

Akismet employs a web service powered by cloud servers, which evaluates comments for spam. Developed by Automattic, the company behind WordPress, this is one of the most popular cloud-based and free anti-spam plugins for WordPress. First, you need to connect to the cloud service using an API key obtained by registering for the service.

01 akismet sample-spam-screenshot

A couple of comments blocked by Akismet

The plugin uploads all incoming comments to Akismet’s cloud servers, where highly specialized algorithms evaluate the validity of the comments. Some are caught red-handed and shifted to the spam queue. The squeaky clean ones are directly moderated and published. If Akismet gets stuck, i.e., can’t decide for good whether a particular plugin is spam or not, it moves the comment to the moderation queue.

Akismet is free for personal and noncommercial use, with a limit of 50,000 comment checks a month. The paid plans start from $5 a month, which is a pretty sweet deal for spam. It also seamlessly integrates with the Jetpack and Contact Form 7 plugins.

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3. Anti-Spam by CleanTalk—No Captcha, No Comments & Registrations Spam

CleanTalk is a premium cloud-based anti-spam plugin for WordPress, blocking spam comments, spam bot signups, and trackbacks.

The plugin is very similar to Akismet in that the incoming comments are uploaded to CleanTalk’s cloud servers where they undergo multiple validation checks. The comments are then moved to the spam queue or are approved and published depending on the results.

02 cleantalk sample screen

Cloud-based protection options from CleanTalk

The plugin maintains advanced statistics of blocked spam comments and a spam comment log. It also supports a long list of third-party plugin compatibilities, such as W3 Total Cache, Jetpack, Contact Form 7, WooCommerce, BuddyPress, bbPress, and WP-Members.

It offers a 14-day free trial, after which a commercial license costs $8/year for a single website.

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4. Anti-Spam Bee

Anti-Spam Bee is a completely free WordPress plugin for personal and commercial uses. Unlike Akismet, Anti-Spam Bee does not require user registration. However, this plugin does not use cloud-powered spam detection algorithms. It relies on server-side techniques, such as matching it against a public spam database, validating the IP address of commenters, using regular expressions, and trusting commenters with Gravatar as nonspammers.

04 antispam bee

Host of options offered by Anti-Spam Bee

It also clears the WordPress database of previously stored spam every few days, preventing it from slowing down. Moreover, the plugin displays spam statistics and emails the daily spam blockage statistics to the moderators.

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5. Cerber

cerber wordpress anti spam plugin

Cerber is a powerful anti-spam WordPress plugin that can greatly help when dealing with spam, attacks, malware and other inconvenience. As for spam specifically, Cerber activates its engines and Google reCAPTCHA for comments, contacts and registrations. With Cerber, you can also limit login attempts, monitor logins, create black and white IP access lists and generate a custom login URL.

Cerber sure has a broad spectrum of features you can use to your advantage for your information. Using the impressive Cerber, you can now protect your blogs or websites with an anti-spam tool. Let’s continue blocking users who attempt to log in with a prohibited username and stopping user enumeration. Let your web space run smoothly and seamlessly without any hitches. Achieve this result without breaking a single drop of sweat thanks to Cerber.

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6. Anti-spam

anti spam wordpress plugin

At this time, you might be getting a ton of spammy comments that you would like to eliminate. You are in luck, Anti-spam is the perfect example of an excellent solution to block comment spam. Do you know what’s best? Anti-spam is – hence the name – a WordPress plugin that gets rid of annoying spam. When it comes to Anti-spam, all it takes is to download and install the plugin and you are ready to roll. Indeed, there is no need to performing any editing and setting up; Anti-spam works upon installation.

One of the features of Anti-spam is storing blocked comments in the spam folder. You can manually delete them or even approve some comments if needed. Bear in mind, Anti-spam is exclusive to blocking comment spam only. If you are searching for other spam and malware protection, you better look into any other anti-spam WordPress plugin that we have in this collection.

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7. BulletProof Security

bulletproof security wordpress anti spam plugin

BulletProof Security is an all-in-one website protector to keep your pages operating flawlessly regardless of spam, attacks and other malicious activities. It keeps your online space protected and safe at all times. Besides, pre-install a plugin like BulletProof Security and never run into any issue after the volume of traffic increases. Better be safe early on than sorry afterward. BulletProof Security rocks a one-click setup wizard, ensuring that all users can benefit from its amazing features.

BulletProof Security features are malware scanner, login monitoring, backups, and front- and back-end maintenance mode. At any time, when you find yourself in need of more amenities, you can always upgrade to BulletProof Security Pro and make a difference. However, in many cases, the free version is more than enough.

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8. Wordfence Security

wordfence wordpress anti spam plugin

Wordfence Security is a full-blown security system for your WordPress website or blog. Instead of running into any inconveniences, let Wordfence Security take care of the smooth operation of your page in the background. Wordfence Security is way more than “just” an anti-spam plugin for WordPress, as it takes care of all these other stuff, too. With more than three million downloads, you know that Wordfence Security must be doing something right.

Wordfence Security is both a firewall and a security scanner. In the admin, you can always see what is going on, how many threats, spam and possible attacks Wordfence Security prevented. Of course, this includes spam as well. And if you would ever want to take things to a whole different level, you can always upgrade to Wordfence Security pro plan and enjoy an even thicker layer of protection.

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9. Blackhole for Bad Bots

blackhole bad bots wordpress anti spam plugin

You can now create your virtual black hole for spammers and hackers. Blackhole for Bad Bots is a WordPress anti-spam plugin that keeps you away from harmful bots. How the tool operates is very simple. It adds a hidden link to the footer of your page that no human eye can spot. From then on, Blackhole for Bad Bots gets rid of all the robots that try and follow the link. Moreover, the more advanced bots, who manage to enter the link, get thrown in the virtual black hole. The plugin does not affect real users and good bots.

Blackhole for Bad Bots’ setup process is swift and straightforward. It is also super fast and lightweight, ensuring it does not impact your website’s performance and load speed. Last, Blackhole for Bad Bots is updated regularly, always improving and innovating.

Download

10. WPBruiser (No Captcha Anti-Spam}

From the plugin’s page:

“WPBruiser (formerly GoodBye Captcha) is an anti-spam and security plugin is based on algorithms that identify spam bots without any annoying and hard to read captcha images.”

The developer claims that the plugin does not display any captchas or common validation mechanisms to the visitor. The plugin does not let spam enter your WordPress site. However, this poses a risk if the plugin reports a false positive.

Update: Mihai was kind enough to clarify this for us. He says the plugin allows logging all blocked content for any form it protects.

  • The Settings tab has an option: “Keep Blocked Submitted Content For,” which defaults to 10 days. Any blocked content older than this value will be automatically deleted. Of course, the admin can change this value. The plugin will not log a blocked attempt’s content by setting the value to zero days.
  • One can also see every blocked request information. Simply go to the Reports tab. For each blocked attempt, you have the option to “View Blocked Content.” Click on that, and you’ll see the formatted blocked attempt.
08 WPBruiser settings

General Settings page of WPBruiser

This is a slight disadvantage. If you are willing to take this small risk, Goodbye Captcha is a great choice. This plugin integrates with the WordPress login and registration page apart from the comment form. It also has features like IP blacklisting, optional logging, statistics, and report generation. It is compatible with a host of third-party plugins.

Download

11. Stop Spammers Spam Prevention

This plugin is yet another awesome server and client-side anti-spam WordPress plugin with over 20 different checks for spam comments. The plugin also prevents login page spam and has over 12 pages of options for heavy user customization.

09 Stop Spammers Spam Prevention settings

One of the many settings page of this plugin

In the case of spam detection, users get a second chance to post their comments or log in. In such cases, a captcha challenge will appear. Upon determining which comments are acceptable, the plugin supports Google reCaptcha, OpenCaptcha, and SolveMedia Captcha as the captcha challenge services.

Download

Conclusion

As a WordPress site owner, I think picking the right anti-spam WordPress plugin depends on the characteristics of the traffic you’re receiving.

If you are mostly publishing “list type” articles, then the chances are that your visitors will be suggesting new or different products on the list. Anti-spam algorithms might consider this advertising spam, moving such valid comments directly to the spam queue. Therefore, I would recommend going through the spam queue if the number isn’t so high.

Finally, you’ll also have to choose between a cloud-based solution and a local solution that uses server and client-side data, JavaScript, and cookies to prevent spam.

The local solution would do just fine if you have a moderate amount of traffic with active/recurring/inquisitive comments. If you are new to WordPress, Akismet is your best bet. However, a cloud-based solution like Akismet or WangGuard would be awesome if you run a typical viral site.

You can also follow these tips to keep your website clean from unnecessary files, database entries, etc. Keeping your website clean will improve your website’s load speed. For more information about WordPress performance, make sure to read this guide.

Have we missed your favorite anti-spam WordPress plugin? Let us know, and we’ll add it to our list! Thanks for reading!

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Frontend web developer and web designer specializing in WordPress theme development. After graduating with BA he self-taught front-end web development. Currently has over 10 years of experience in mainly CSS, HTML (TailwindCSS, Bootstrap), JavaScript(React, Vue, Angular), and PHP. Obsessed with application performance, user experience, and simplicity.

This Post Has 21 Comments

  1. Hi Sourav,

    This is Mihai, the author of WPBruiser. Thank you for mentioning my plugin as part of this useful list of the Best Anti-Spam Plugins.
    The information you’ve provided about about WPBruiser is a bit inaccurate:

    You mentioned:
    what happens when the plugin is wrong? For example, if the plugin reports a false positive, i.e. if it detects a valid comment as spam, then that comment never enters your WordPress site – and you never get to see it. Unlike other plugins, where the copy of the comment would be present in your spam queue.

    The plugin offers the possibility to log ALL blocked content for any form that it protects. In the Settings tab there is a option:
    “Keep Blocked Submitted Content For” which defaults to 10 days. Any blocked content older than this value will be automatically deleted. Of course, this value can be changed by the admin. By settings the value to zero days, the plugin will not log blocked attempts content.
    Yes, you can see every request information that was blocked. Go to Reports tab and for each blocked attempt you have an option ” View Blocked Content”. Clicking on that, you’ll see the formatted blocked attempt.

    MIhai

    1. Hi Mihai,
      My apologies for the error. Thank you so much for pointing this out. I’ve edited the post accordingly.

      Best,
      Sourav

  2. i have experience to use CleanTalk anti-spam plugin that really works well though. The plus in its could based and your site not gonna hurt with extra server load as well as default low wordpress security. i i will recommend disqus for comments to use rather than other plugins.

    1. Hey Emery,

      Thanks for sharing your views.

      Best,
      Sourav

  3. Sourav,
    Thanks for this article. There is nothing else better than WPBruiser. It just simply ROCKS! Amazing plugin!

  4. Munna Hossain says:

    Great list of anti-spam plugins. I am using Akismet to protect my blog from spamming. Spam comments is really a bog problem for the bloggers or webmasters. This is really an irritating problem. Everyone wants to get rid of this problem. Thanks WordPress community that they have provided some excellent anti-spam plugins to keep us free from all spamming problems. Thanks for sharing such an informative article.

  5. Acil Kredi says:

    Hello i am using Akismet but also blocking normal comments how i can make whitelist?

    1. Acil,

      You need to manually approve flagged comments and the next time the same user will post a comment it no longer will be marked as spam unless it will actually contain several links and spam keywords.

  6. Denim Scintil says:

    i install the clean talk wordpress plugin and yeah, It’s working thanks for sharing this article
    very helpful dude.

  7. Emily Brown says:

    Great work,

    You should try WP-SpamShield Anti-Spam plugin because it is easy to use anti-spam WordPress plugin that tackles comment spam & registration spam.

  8. Mausin Shaikh says:

    Great List of antispam plugins. It can be really helpful. Till now I have only used the WordPress’s own Akismet plugin for spam filtering. However, nowadays, the Anti-Spam by CleanTalk is gathering some popularity. But being a premium plugin (except the 14-day trial) it limits the user base. I think I must try it for one of my project to check is it worth or not. I also want to know if it integrates with the Contact Form 7 properly or not.

    1. It does support Contact Form 7. However, for most users Akismet is perfectly fine since it comes preinstalled, so there is no reason to look elsewhere.

  9. Hey. I had a plugin Invisible Captcha. After a while when sending a comment, the user began to see the message, “This is spam.” Put others plagin, the same thing. What could be the problem?

    1. I would recommend keeping away from any Captcha based plugins. Any decent spam bot will challenge them anyway. The best option would be to use Akismet in combination with a simple too like WPBruiser. That way your blog should be well protected.

      1. sunita smith says:

        Hey i am also using Akismet anti spam comment box in my website but since i added it i have’t receiving any comments . And what is this for (WPBruiser) , as Mr Aigars recommending along with Akismet?

        1. Test if you can post a comment on your own site to see if the form is actually working.
          But since 99.9% of the comments are spam, there is a chance that your form is working but it has filtered out all the bad comments for you.

  10. Really awesome article. currently i m using anti-spam plugin for my WP site. i will use other plugin also

    1. These days it is nearly impossible to run a WordPress blog without anti-spam plugin. For example, last year alone we received over 1 million spam comments for this website.

  11. joel-kayumba says:

    thank you very much for this tutorial I am a beginner in blogging and I encounter serious problem with a mass of spam that I receive all day with I think I want to get out, good job thank you.

  12. There is now a new plugin “APS Content Moderator Plugin”, which uses an AI service to detect unwanted content in the comment and automatically blocks it.

  13. murilo mhoca says:

    Akismet can’t handle it, I’ve been having problems with a site that I take care of in the company because of unwanted links. This Blackhole for Bad Bots plugin seems like a good way to try to improve.

    If it works I will return to this list.

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