Force Capitalization of Display Name


Most of the time, users forget to type the proper format or case of a text or letters. You might encounter names in lower case, upper case, proper case, or mixed case letters. Still, if you want to require the appropriate format or case of letters, this plugin will help to  force the Display Name to be capitalized with special prepositions globally. You can read the installation guide here.


In the example below, a user registers with mixed case letters of her first name; it will then be displayed in her profile form, account form, and member directory.

[Profile Form]

[Account Form]

[Member Directory]

You need to install and activate the plugin; you can read the installation and activation guide here. Once activated, it will automatically capitalize all display names in the UM Profile Form, Account Form, and Member Directory.

[Profile Form]

[Account Form]

[Member Directory]

The plugin supports special prepositions:

  • Some use cases:
Original ucwords(strtolower($str) UM Capitalize($str)
jOÃO DA SILVA João Da Silva João da Silva
eduardo dall'agnoll Eduardo Dall'agnoll Eduardo Dall'Agnoll
Papa joão xxiii Papa João Xxiii Papa João XXIII
Google s/a Google S/a Google S/A
paul mccartney Paul Mccartney Paul McCartney
nome da empresa ltda Nome Da Empresa Ltda Nome da Empresa LTDA
nome da empresa me Nome Da Empresa Me Nome da Empresa ME
Mr. o'donnel Mr. O'donnel Mr. O'Donnel


By default, this plugin capitalizes the UM Display Name on page load. If you are experiencing performance issues, you can disable this with the following code snippet:


If the above code is added, this capitalizes the first name, last name, and display name on the profile/account update. It also works when you create or update the account via WP Admin > Users.

Display Name Column

This plugin adds an extra column to the WP Users List as the default Name has no filter hook to force the capitalization. If you want to disable this, use the following code snippets:

remove_filter( 'manage_users_custom_column', 'um_extended_capitalize_column_content', 10, 3 ); 
remove_filter( 'manage_users_columns', 'um_extended_add_display_name_column', 1 );


Word Splitters

  • Filter Hook: um_extended_capitlize_name__word_splitter
  • Default values: ' ', '-', "O’", "L’", "D’", 'St.', 'Mc', "Dall'", "l’", "d’", "a’", "o’"

Lowercase Exceptions

  • Filter Hook: um_extended_capitlize_name__lowercase_exceptions
  • Default values: 'the', 'van', 'den', 'von', 'und', 'der', 'da', 'of', 'and', "d’", 'das', 'do', 'dos', 'e', 'el

Lowercase Exceptions

  • Filter Hook: um_extended_capitlize_name__uppercase_exceptions
  • Default values: 'III', 'IV', 'VI', 'VII', 'VIII', 'IX', 'ME', 'EIRELI', 'EPP', 'S/A', 'S.A', 'LTDA'