Description
Changing usernames should be a pretty straightforward feature. Unfortunately, WordPress doesn’t allow it by default. Username Changer attempts to remedy that oversight.
Screenshots
Settings Panel: The settings panel allows you to configure username rules and message strings. 
Changing A Username" Since version 3.0.0, usernames are now changed through the user profile page.
Installation
From your WordPress dashboard
- Visit ‘Plugins > Add New’
- Search for ‘Username Changer’
- Activate Username Changer from your Plugins page
From WordPress.org
- Download Username Changer
- Upload the ‘username-changer’ folder to the ‘/wp-content/plugins’ directory of your WordPress installation
- Activate Username Changer from your Plugins page
FAQ
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Is Username Changer compatible with Co-Authors Plus?
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Yes! Username Changer works out of the box with Co-Authors Plus.
Reviews
18 1822 March 1822 000000 2021
I like how easy it changes username.
Will be great if I could change user_nicename fields as well.
Had to use another plugin for this: https://ru.wordpress.org/plugins/edit-author-slug/
It's too complex, I only want to type manual value, without having to study complex settings page.
15 1540 November 1540 000000 2020
I used the gif file on the screenshots section of the main plugin page for help. That's all. I changed the admin-name. All posts are automatically assigned to the new user. Everything else, like e-mail address, password stays the same.
4 0415 August 0415 000000 2020
This plugin saved me the whole process of going to PHPmyadmin to make these username changes.
3 0331 June 0331 000000 2020
Does exactly what it promises and solves a problem every WordPress admin has to deal with. Thank you!
3 0305 June 0305 000000 2020
Installed this plugin and changed the administrator username instantly. Quick, simple, easy!
Thanks a million!
18 1834 May 1834 000000 2020
et fonctionne avec wordpress 5.4.1
C'est génial, MERCI pour "Username Changer"
Contributors & Developers
“Username Changer” is open source software. The following people have contributed to this plugin.
Contributors
“Username Changer” has been translated into 9 locales. Thank you to the translators for their contributions.
Translate “Username Changer” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
Version 3.2.2
- Updated: General cleanup
- Updated: Settings library
Version 3.2.1
- Updated: Settings library (fixes sysinfo security vulnerability)
Version 3.2.0
- Updated: Bring code up to reasonable standards
Version 3.1.1
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Fixed: Issue with multicheck settings fields
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Version 3.1.0 =
- Added: Email notification support
- Added: Nickname support
- Improved: SQL performance
- Improved: Dynamically update profile files
Version 3.0.1
- Fixed: Typo in readme file
Version 3.0.0
- Improved: Replaced the clunky interface with an inline profile field (props: Danny van Kooten)
- Added: Settings panel
Version 2.1.1
- Removed: Deprecated functions
Version 2.0.5
- Fixed: Contributor field
Version 2.0.4
- Updated: Plugin metalinks
Version 2.0.3
- Fixed: User nice name support
Version 2.0.2
- Added: multisite support
Version 2.0.1
- Added: Proper username sanitization
- Improved: Minor code cleanup
Version 2.0.0
- Improved: Converted to class-based structure
Version 1.4
- Added: Include author url (nicename) in update process
Version 1.3
- Fixed: Properly escaped vars on POST (I think)
Version 1.2
- Fixed: Minor tweak to previous release
Version 1.1
- Added: Action on All Users page
- Improved: User dropdown is now sorted alphabetically
Version 1.0
- Initial release