Do you want to remove the language switch option on the WordPress login interface?
Disabling the language switcher will make your default language the only option on the login page. But users can still change the language in their profile settings.

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Why disable language switching?
The release of WordPress 5.9 introduced a new drop-in login option that allows users to select a new language when logging into the site.
If more than one language is active on the site, this option will appear.

If you are a minimalist who wants to keep your login page looking clean, then this article is for you.
Disable the option to switch languages with the plugin
Disable Login Language Switcher is a plugin that can help you with this. After you install and activate, the language switcher option will be removed automatically. You do not need to configure anything further.

Now just go back to the login page and enjoy your results.
Disable the option to switch languages without using the plugin
If you do not want to install additional plugins on your website, then I will guide you to use the code. You can add the following code to the functions.php file .
add_filter( 'login_display_language_dropdown', '__return_false' );
This code will automatically disable the language switcher on your WordPress site. Now, when you go to the login page, the option to switch languages is gone.
Need to enable language switching in the future? Just delete the line of code you added.
Epilogue
This is a very simple short tip that you will probably need in the process of developing a WordPress website.
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