If you can write your posts in 2 or more(Woo…) languages within one blog, you might want to tell the client browser the language attribute of you posts.
According to <a href="http://www.w3.org/International/tutorials/language-decl/en/all.html" title=" W3C tutorial" rel="nofollow ugc">the tutorial on W3C</a>, language attribute can be declared in the container html tag of your post like this: 
<div id=”post_id” class=”post_entry” lang=”zh-Hant” xml:lang=”zh-Hant” dir=”ttb”>… 
Here “zh-Hans” is the language attribute of your post which means it’s written in Simplified Chinese.
This plugin gives your post a language tag by adding a meta deta to that post.
To add language tag, select it from the language box when you compose/edit a post. Select “None” will delete the language tag.
<h3>Revisions</h3>
2007-12-18, 
0.2: Now you can difine language direction. 
 Insert CSS style into page head automatically to support pretty printing.
 readme file updated for new feature and fixed a error
2007-07-23 
0.1: First release

Multilingual post

This plugin adds a standard compliant language tag to your post and page.

Tim W

Loco Translate provides in-browser editing of WordPress translation files and integration with automatic translation services.
It also provides Gettext/localization tools for developers, such as extracting strings and generating templates.
Features include:
<ul>
<li>Built-in translation editor within WordPress admin</li>
<li>Integration with translation APIs including DeepL, Google, Lecto, Microsoft and OpenAI.</li>
<li>Create and update language files directly in your theme or plugin</li>
<li>Extraction of translatable strings from your source code</li>
<li>Native MO file compilation without the need for Gettext on your system</li>
<li>JSON (Jed) file compilation compatible with WordPress script localization</li>
<li>Support for standard PO features including comments, references and plural forms</li>
<li>PO source view with clickable source code references</li>
<li>Protected language directory for saving custom translations</li>
<li>Configurable PO file backups with diff and restore capability</li>
<li>Built-in WordPress locale codes</li>
</ul>
Official <a href="https://localise.biz/" rel="nofollow ugc">Loco</a> WordPress plugin by Tim Whitlock. 
For more information please visit our <a href="https://localise.biz/wordpress/plugin" rel="nofollow ugc">plugin page</a>.
<h3>Keyboard shortcuts</h3>
The PO file editor supports the following keyboard shortcuts for faster translating:
<ul>
<li>Done and Next: <code>Ctrl ↵</code></li>
<li>Next string: <code>Ctrl ↓</code></li>
<li>Previous string: <code>Ctrl ↑</code></li>
<li>Next untranslated: <code>Shift Ctrl ↓</code></li>
<li>Previous untranslated: <code>Shift Ctrl ↑</code></li>
<li>Copy from source text: <code>Ctrl B</code></li>
<li>Clear translation: <code>Ctrl K</code></li>
<li>Toggle Fuzzy: <code>Ctrl U</code></li>
<li>Save PO / compile MO: <code>Ctrl S</code></li>
<li>Toggle invisibles: <code>Shift Ctrl I</code></li>
<li>Suggest translation: <code>Ctrl J</code></li>
</ul>
Mac users can use ⌘ Cmd instead of Ctrl.

Loco Translate

must have


Great plugin. Very useful to be able to translate plugins without an external tool like poedit.


Great tool

I'm using it in all one language projects


We recommend this to all of our clients who ask about translations.



It can even be used to "translate" (alter) default English texts within a plugin/theme too.


Awesome Plugin

Great support!


A must-have plugin for managing the lifecycle of translations in custom plugins and themes. 



There's a steep learning curve to climb when it comes to language and translation management. This plugin helps a lot and works really well.



Also impressed with the speed of response to my help topic. Thanks Tim!


Excellent plugin and support

Translate WordPress plugins and themes directly in your browser. Versatile PO file editor with integrated AI translation providers.

Multilingual post vs Loco Translate