Blue Captcha
Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.
Solid choice
Blue Captcha is a solid plugin choice in 2026, with a few things worth checking first. It runs on 400+ sites, is rated 4.7/5 and was last updated 1 month ago, and scores 72/100 on our health check.
- Small user base (400+ active installs)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Blue Captcha stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| captcha | #20 |
| protection | >100 |
| recaptcha | >100 |
| safety | #13 |
| security | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 4.7 from 15 reviews
About Blue Captcha
From the official readme · v2.1.0Description
Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons. It is easily installed and provides high protection against spammers, bots or unwanted persons.
Do you like Blue Captcha? Then Support it!
If you like Blue Captcha, then you can help it grow by donating one dollar. Any donation will be highly appreciated and will help in further development of this plugin.
Features:
- It can be applied to any of the following : login form, registration form, commentary form or password recovery form
- It’s highly customized
- It has 7 predefined CAPTCHA difficulty levels to choose from – of course, you can adjust your CAPTCHA settings and create a custom level
- The possible CAPTCHA customizations are more than enough
- It can apply the same or totally different CAPTCHA settings on login form, registration form, commentary form and password recovery form
- It can display CAPTCHA to only non-registered users or registered users
- It can preview CAPTCHA image before applying it
- It supports 5 different fonts and 30 different background images
- It supports single or double CAPTCHA layer
- It can display up to 20(!) characters on Captcha Images
- It is capable of adding extra drawing (lines, circles, grid, transparent lines) on CAPTCHA image
- It is capable of keeping log file which registers all activities concerning user logins, user registrations, user comments and password recovery
- It has “Hall of Shame” (HoS)
- It provides blocking options as well
- It can export the entire log file or HoS into CSV file (Excel)
- With the help of log file and HoS, it’s easy to track down the IP address of spammers or unwanted persons and ban them for ever
You can visit Blue Captcha Page for more information.
Blue Captcha Translation
Blue Captcha is now available in Greek, Spanish, Russian, Italian, Brazilian Portuguese, Serbo-Croatian, Slovenian and Arabic.
I would be very grateful if someone is willing to translate Blue Captcha to another language.
For those interested, the template translation file (“blue-captcha.pot”) is located on “languages” folder of blue-captcha plugin.
Contribution
Special Thanks To The Following Contributors:
Leon Roskar (http://www.qb.si) => Slovenian Translation
Borisa Djuraskovic (http://www.webhostinghub.com) => Serbo-Croatian Translation
João Victor T. Magalhães => Brazilian Portuguese Translation
Ericka Morales Hernández (http://todoriesgo.net) => Italian Translation
Alex Balashov => Russian Translation
Andrew Kurtis (http://www.webhostinghub.com) => Spanish Translation
Christos Bakopoulos => Arabic Translation
Installation
- Copy the full directory (blue-captcha) into your wp-content/plugins directory or download the plugin from plugin administration page
- Activate the plugin at the plugin administration page
Changelog
2.1.0
- 17 Aug 2026
- Security improvements and additional protection for administrative actions
- CSRF protection added to administrative actions
- Additional WordPress security and coding-standard improvements
2.0.1
- 08 Feb 2026
- Translation to Arabic Language (ar_AR) was added – Translation by Christos Bakopoulos
2.0.0
- 02 May 2025
- Upgrade to support PHP 7 & new WordPress Version
- Security issues (XSS etc) were fixed
1.7.4
- 06 Jun 2015
- Operating System & Browser information (HTTP_USER_AGENT) added in Log File
- WP-CONTENT hardcoded string was fixed
- Translation to Serbo-Croatian Language (sr_RS) was added – Translation by Borisa Djuraskovic
- Translation to Slovenian Language (sl_SI) was added – Translation by Leon Roskar
1.7.3
- 12 Sep 2014
- New option “Caption” was added in General Options
- Bug with broken image was fixed (major issue)
- Translation to Brazilian Portuguese Language (pt_BR) was added – Translation by João Victor T. Magalhães
1.7.2
- 16 Mar 2014
- New option “Enable Translation” was added in General Options
- Translation to Russian Language (ru) was added – Translation by Alex Balashov
- Translation to Italian Language (it) was added – Translation by Ericka Morales Hernández
Screenshots
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Blue Captcha alternatives
All captcha plugins →
FAQ
Blue Captcha: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Sep 29, 2026
Is Blue Captcha free?
Yes. Blue Captcha is free to download and use from the official WordPress.org plugin directory.
Is Blue Captcha safe to use in 2026?
Blue Captcha is a solid plugin choice in 2026, with a few things worth checking first. It runs on 400+ sites, is rated 4.7/5 and was last updated 1 month ago, and scores 72/100 on our health check.
How many websites use Blue Captcha?
Blue Captcha is active on 400+ WordPress websites and has been downloaded 38,048 times since it launched in March 2012. It was downloaded 200 times in the last 30 days.
Does Blue Captcha work with WordPress 7.1?
Blue Captcha is officially tested up to WordPress 7.0.6, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does Blue Captcha need?
Blue Captcha requires PHP 7.0 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Blue Captcha last updated?
The latest version, 2.1.0, was released on August 17, 2026 (1 month ago).
Who makes Blue Captcha?
Blue Captcha is developed and maintained by jotis.
What are the best alternatives to Blue Captcha?
The most popular alternatives to Blue Captcha are SiteGuard WP Plugin (500K+ installs), CF7 Apps (300K+ installs) and Really Simple CAPTCHA (300K+ installs).
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