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.

Satinder Singh

CoolHappy

Cool Plugins

Khushwant Singh

Polylang Duplicate Content addon lets you quickly duplicate your original or default language post/page content into other languages. It makes the translation process faster and easier. 
Instead of adding featured images, galleries, or content again and again, you can just duplicate everything once and then only translate the text you need, saving time.
<h3>Automate Translation Using Polylang</h3>
<a href="https://coolplugins.net/product/autopoly-ai-translation-for-polylang/?utm_source=pdca_plugin&utm_medium=readme&utm_campaign=get_pro&utm_content=top_description" rel="nofollow ugc">AutoPoly – AI Translations For Polylang</a> effortlessly copies your original or default language post content and translates it into other languages, simplifying and speeding up the entire translation process.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/ecHsOyIL_J4?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h3>Key Features</h3>
<ul>
<li>
AI Automatic Translation – Translate your Elementor & Gutenberg website content using Chrome’s built-in AI. This feature enables real-time translation directly within the browser, without any paid API services.
</li>
<li>
Elementor Page Translation – Translate entire Elementor pages, including all sections, widgets, and content, without losing styles or design.
</li>
<li>
Gutenberg Block Compatibility – Automatically translate content within Gutenberg blocks, including core blocks and popular third-party blocks like Spectra, Kadence, Stackable, Otter, and Essential.
</li>
<li>
Automatic Content Translation – Effortlessly translate post titles, content, images, galleries, and meta fields from one language to another using Machine & AI Translations.
</li>
<li>
ACF Fields Translation – Translate ACF fields only with type(text, textarea & wysiwyg) in Gutenberg pages.
</li>
<li>
One-Click Duplication – Easily duplicate your original or default language content into other languages, saving time and reducing manual work.
</li>
<li>
Style and Format Preservation – The plugin maintains all styles, formats, and layouts from the original post, ensuring that your translated content maintains a consistent appearance.
</li>
<li>
Multilingual Management – Simplifies the process of managing a multilingual website by automating translation and reducing the need for repetitive actions.
</li>
<li>
Custom Block Support – While optimized for Gutenberg blocks, the plugin also works with several third-party block plugins, extending its versatility.
</li>
<li>
Easy to Use – Designed with a user-friendly interface, making it accessible even for those with limited technical knowledge.
</li>
</ul>
<h3>Our Advanced Language Switcher Plugins</h3>
<ul>
<li>
<a href="https://wordpress.org/plugins/language-switcher-for-divi-polylang" rel="ugc">Language Switcher – Polylang for Divi</a>: Add a customizable language switcher to your website inside the Divi Builder using Polylang.
</li>
<li>
<a href="https://go.coolplugins.net/language-switcher" rel="nofollow ugc">Language Switcher for Elementor & Polylang</a>: Add a powerful language switcher to your website and easily translate Elementor Templates.
</li>
</ul>
<h3>Check out our advanced Automatic Translate Addon</h3>
<ul>
<li>
<a href="https://locoaddon.com/?utm_source=pdca_plugin&utm_medium=readme&utm_campaign=get_pro&utm_content=atlt_check_out" rel="nofollow ugc">LocoAI – Auto Translate for Loco Translate</a> is an addon that enhances the functionality of the Loco Translate plugin by enabling the automatic translation of WordPress themes and plugins. This addon connects with sources like Google, Yandex, DeepL, or AI-powered sources like ChatGPT, Gemini AI, and Chrome AI to provide instant and automated translations.
</li>
<li>
<a href="https://coolplugins.net/product/automatic-translate-addon-for-translatepress-pro/?utm_source=pdca_plugin&utm_medium=readme&utm_campaign=get_pro&utm_content=tpa_check_out" rel="nofollow ugc">AI Translation for TranslatePress</a> is a powerful addon that enhances the functionality of the TranslatePress plugin. This addon uses advanced translation services, like Google Translate, Yandex, and Chrome AI translator, to provide accurate and instant translations for your web pages automatically.
</li>
</ul>
Use of 3rd Party Services: This plugin connects to the Cool Plugins feedback server only for optional usage data sharing and voluntary feedback submission (for example, during plugin deactivation). Data is transmitted solely after explicit user consent. No hidden tracking is performed, and no frontend visitor or site user data is collected. For more details, please review our <a href="https://my.coolplugins.net/terms/usage-tracking/" rel="nofollow ugc">Data Usage Policy</a>, <a href="https://my.coolplugins.net/terms/" rel="nofollow ugc">TOS</a>, and <a href="https://my.coolplugins.net/terms/privacy-policy/" rel="nofollow ugc">Privacy Policy</a>.
<blockquote>
This plugin is not developed by or affiliated with the “Polylang developers“. It is a third-party addon that provides duplicate content functionality to quickly translate your post with the same styles into other languages.
</blockquote>

Polylang Duplicate Content Addon


Without your plugin, much time was wasted. Now everything is better.


Polylang: Now everything is better.

As expected

Duplicate your original post/page content into other languages in one click with the Polylang Duplicate Content addon.

Multilingual post vs Polylang Duplicate Content Addon