JS Morisset

<p>Add a user locale drop-down menu item in the WordPress admin back-end admin and front-end toolbar menus.</p>
<p>Perfect for anyone that needs to switch languages quickly and easily – allows logged-in users to change their preferred locale / language setting right from the toolbar menu (instead of having to update their WordPress user profile page).</p>
<p>The default WordPress behavior is to apply the user locale preference to the admin back-end only – this plugin extends the user locale / language preference to the front-end webpage as well.</p>
<p>There are no plugin settings – simply install and activate the plugin.</p>
<h4>Do you use the Polylang plugin?</h4>
<p>If the Polylang plugin is active, the user locale menu will automatically use the correct Polylang language URLs for the current webpage.</p>


JSM User Locale Selector

Hi, I think this plugin is really useful, stable and reliable.
I've been recommending it in the BuddyPress forum and also now in my own translation helper plugin which I designed to work with this: [link removed]
So excellent, 5 stars.

Really useful

A simple but effective plugin. The convenience of a quick admin language switcher saves precious seconds. Thanks.

Effective

Add a quick and easy user locale / language selector in the WordPress admin back-end and front-end toolbar menus.

Katsushi Kawamori

<h4>Automatically switch the locale according to the locale of the browser.</h4>
<ul>
<li>Can specify multiple locale of browser.</li>
<li>Can import and export browser locale and WordPress locale configuration file with CSV.</li>
</ul>


Locale Auto Switch

Automatically switch the locale according to the locale of the browser.

JSM User Locale Selector vs Locale Auto Switch