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.

WordPress Username Availability Checker


WordPress Username availability checker for WordPress & BuddyPress checks for the username availability on new user registration screens.
It assist users & site admins by notifying them using ajax whether the username they entered is available or not.


  • Checks for username availability in WordPress Admin New User screen
  • Checks for username availability on WordPress standard registration page
  • Checks for availability on BuddyPress registration page.

For screenshots & more details, please visit BuddyDev Username Availability Checker plugin page

Free & paid supports are available via BuddyDev Support Forum. Please Use BuddyDev support forums for your support requests. We may not be able to keep an eye over WordPress plugin support forum.


  1. Download , x.y.z are version numbers eg. 1.0.0
  2. Extract the zip file
  3. Upload bpdev-username-availability-checker to the /wp-content/plugins/ directory
  4. Activate the plugin through the ‘Plugins’ menu in WordPress

You can also visit Dashboard->Plugin->Add New and search for “Buddydev User Name Availability Checker” and install from there.


How do I get support?

Please use BuddyDev forums for any support question. We are helpful people and stand behind our plugins firmly.


Çile 20, 2018 1 reply
Just Awesome, its what EVERYONE should have. This should be mandatory within Wordpress files anyways.
Îlon 3, 2016
I’m using this plugin for a BuddyPress based site and it allows the username to be checked prior to sumbitting. This surely facilitates a better sign up process and user-experience. 5* – thank you for developing and sharing your plugin 🙂
Read all 5 reviews

Contributors & Developers

“WordPress Username Availability Checker” is open source software. The following people have contributed to this plugin.




  • Added support for WooCommerce account and checkout page username availability support(if username is enabled for Woocommerce account creation).


  • If BuddyPress is active, remove space between the words before checking for availability.


  • Sanitize username before checking. Helps solve the space and dashes issue.


  • Fix the undefined function ‘get_current_screen’. Thank you Loïc for reporting.


  • Improve error messages show to the user on invalid username.


  • Tested with WordPress 5.2.1/BuddyPress 4.3


  • Add compatibility with WordPress Ajax Login Plugin
  • Rename plugin to WordPress User Name availability Checker.


  • Allow using filter to add extra username selectors


  • Initial release on repo