This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

WM Simple Captcha


WM Simple Captcha for registration page, customize captcha image according to your theme. Change image width, height, background color, set possible characters, add space between two characters, adjust font size, change form label, add your custom css, enable/disable refresh button, change refresh button. Many think more on customization.


  • Enable/Disable Captcha for wordpress registration page
  • Set the captcha image with
  • Set the captcha image height
  • Set the captcha possible characters length
  • Adjust font size
  • Enable space between characters
  • Change font
  • Set possible letters
  • Set random Dots
  • Set random Line
  • Set text color
  • Set dots color
  • Set line color
  • Change form label
  • Enable captcha border
  • Set captcha border color
  • Enable/Disable refresh button
  • Change refresh images as your theme
  • Not case sensitive

In Short you can change captcha image style as your theme style.


  • The overview screen registration.
  • “WM Simple Captcha setting” page.
  • Captcha Image Settings.
  • Form Settings.
  • Form Error and custom CSS


Manual installation

  1. Download the plugin file to your computer and unzip it
  2. Using an FTP program, or your hosting control panel, upload wm_simple_captcha folder to the /wp-content/plugins/ directory
  3. Login to your WordPress admin panel.
  4. Activate the plugin through the ‘Plugins’ menu in WordPress
  5. Go To setting -> wm_simple_captcha change default setting according to your theme.
  6. Plugin is ready for work.

Automatic installation

Automatic installation is the easiest option as WordPress handles the file transfers itself and you don’t even need to leave your web browser. To do an automatic install,

  1. Login to your WordPress admin panel.
  2. Navigate to the Plugins menu and click Add New.
  3. In the search field type ” WM Simple Captcha” and click Search Plugins.
  4. Once you’ve found the plugin you can view details about it such as the the point release, rating and description.
  5. Most importantly of course, you can install it by clicking Install Now.
  6. Activate the plugin through the ‘Plugins’ menu in WordPress
  7. Go To setting -> wm_simple_captcha change default setting according to your theme.
  8. Plugin is ready for work.


Any detail documentation available?

Yes, Web Mumbai Plugins coming soon detail documentation.

If enable/disable registration, I loose my “WM Simple Captcha”

No, change your setting of captcha image, then enable this for registration page.

Can I change background color?

Yes, see the plugin settings page.

Can I change captcha text color?

Yes, see the plugin settings page.


April 19, 2017
This plugin does not really work to stop automated registrations, and here’s why: Inside wm-simple-captcha/classes/wm_simple_captcha_front.php in the captcha_errors method, which is supposed to do the validation of the code, the whole logic is wrapped in a if(isset($_REQUEST['captcha_challenge_field'])){ block. What this means is that if the request does not contain the captcha challenge field then no errors are output and the captcha is not considered invalid at all, successfully letting the registration through. Try it yourself, open the /wp-login.php?action=register page, enter Developer Tools and delete the capthca input box. Viola! Do you really think that automated registration scripts will actually submit all the form inputs? Because they won’t. They’ll simply send a POST request to /wp-login.php?action=register with the bare minimum username and email parameters and they’ll get through. And they don’t. Thus, this plugin does absolutely nothing to stop spam registrations, contains a captcha bypass vulnerability.
Read all 4 reviews

Contributors & Developers

“WM Simple Captcha” is open source software. The following people have contributed to this plugin.


Translate “WM Simple Captcha” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.


2.0.3 – 2016-01-03

  • Tested: tested in latest wordpress 4.4

2.0.2 – 2015-08-22

  • Tested: tested in latest wordpress 4.3
  • Bugfix : We fixed

2.0.1 – 2015-07-12

  • Bugfix : We fixed

2.0.0 – 2015-07-12

  • Tested: tested in latest wordpress 4.2.2
  • Added: Font Upload Functionality

1.1.1 – 2015-04-18

  • Bugfix : We fixed error on activation.
  • Tested : WordPress 3.8.1
  • Tested : WordPress 3.8.2
  • Tested : WordPress 3.8.3
  • Tested : WordPress 3.9

1.1 – 2015-03-02

  • Bugfix : We fixed error on activation.

1.0 – 2015-03-01

  • Initial Version