WordPress.org

Dion Hulse

Pascal Birchler

WordPress Performance Team

<p>Making internationalization/localization in WordPress faster than ever before.</p>
<h3>Disclaimer about WordPress 6.5</h3>
<p><strong>Attention:</strong> most functionality of this plugin has been merged into WordPress 6.5! You might not need it anymore.</p>
<p><em>However</em>, this plugin is still relevant for cases where language packs are not downloaded from WordPress.org but somewhere else, for example if you are developing your own plugins or using commercial plugins.</p>
<p>The Performant Translations plugin converts the translation files of those plugins to the new file format introduced in WordPress 6.5, to really optimize them for speed.</p>
<h3>What this plugin does</h3>
<p>This project uses a new approach to handle translation files in WordPress, making localization blazing fast.</p>
<p>An <a href="https://make.wordpress.org/core/2023/07/24/i18n-performance-analysis/" rel="nofollow ugc">in-depth i18n performance analysis</a> showed that localized WordPress sites load significantly slower than a site without translations.</p>
<p>With this plugin’s new approach to localization, this overhead is massively reduced, making your site fast again. It does so by converting <code>.mo</code> translation files to <code>.php</code> files.</p>
<p>If your site is using a language other than English (US), you should see immediate speed improvements simply by activating this plugin.</p>


Performant Translations


This is a commendable effort, and it came out at the perfect time, at least for me.



I am looking forward to seeing how it evolves, and I hope to see it merged with the core in the fourth phase of the Gutenberg project.


Commendable effort


Installed this plugin to see what the effect is on my site. I am not yet 100% sure that it makes a big difference. But that all depends on the amount of texts used on your site. So far no bad experiences


Plugin speeds up the presentation of your site


This problem has been around for a long time and I've used various plugins. I hope it will be added to the core soon!


Required for non-English speaking WPs


I've got a multi language site (with WPML) that has a huge performance problem. I was not able to figure out what is actually causing the performance problem, the main problem probably has nothing to do with i18n, this plugin still helps cause it significantely speeds up the translations, leaving the only bottleneck to be the unknown problem.



Many thanks for your efforts!


Cool

Making internationalization/localization in WordPress faster than ever before.

Theerawat Patthawee

<p>Intl DateTime Calendar transforms how dates and times are displayed on your WordPress site by leveraging the ECMAScript Internationalization API (Intl). This plugin allows you to switch between different calendar systems like Buddhist, Islamic, Hebrew, and more, without affecting your database or SEO.</p>
<h4>Key Features</h4>
<ul>
<li><strong>Multiple Calendar Systems</strong> – Support for Gregorian, Buddhist, Chinese, Hebrew, Islamic, Japanese, Persian and more</li>
<li><strong>WordPress Integration</strong> – Automatically uses your WordPress date/time format and locale settings</li>
<li><strong>Block Editor Compatible</strong> – Works with all WordPress core blocks, including custom date formats</li>
<li><strong>SEO Friendly</strong> – Maintains proper HTML datetime attributes for search engines</li>
<li><strong>Multilingual Support</strong> – Works with any locale WordPress supports</li>
<li><strong>Site Performance</strong> – Client-side formatting with minimal impact on page load time</li>
<li><strong>Thai Language Support</strong> – Special handling for Thai date formats including Buddhist calendar years</li>
</ul>
<h4>Supported Calendar Systems</h4>
<ul>
<li>Gregorian (Western)</li>
<li>Buddhist</li>
<li>Chinese</li>
<li>Coptic</li>
<li>Dangi (Korean)</li>
<li>Ethiopic</li>
<li>Ethiopic (Amete Alem)</li>
<li>Hebrew</li>
<li>Indian</li>
<li>Islamic</li>
<li>Islamic (Civil)</li>
<li>Islamic (Saudi Arabia)</li>
<li>Islamic (Tabular)</li>
<li>Islamic (Umm al-Qura)</li>
<li>ISO 8601</li>
<li>Japanese</li>
<li>Persian</li>
<li>Republic of China</li>
</ul>
<h4>Use Cases</h4>
<ul>
<li>Buddhist websites in Thailand that need Buddhist Era years (BE)</li>
<li>Islamic websites that need Hijri calendar dates</li>
<li>Multilingual websites that want dates in native calendar systems</li>
<li>Any website that needs specialized date formatting without affecting SEO</li>
</ul>
<h3>Additional Information</h3>
<h4>Technical Details</h4>
<p>This plugin uses the ECMAScript Internationalization API (Intl) for client-side date formatting. The Intl API provides robust support for various calendar systems and locales. For older browsers that may not fully support all features, the plugin includes fallback formatting options.</p>
<h4>Browser Compatibility</h4>
<p>Modern browsers (last 2-3 years) fully support the plugin’s functionality. For older browsers, basic date formatting will still work, but some advanced calendar systems might fall back to Gregorian.</p>
<h4>Privacy</h4>
<p>This plugin does not collect or share any personal data, and all date formatting is done client-side in the user’s browser.</p>


Intl DateTime Calendar

Display dates and times in various calendar systems (Buddhist, Islamic, etc.) while respecting WordPress settings and maintaining SEO friendliness.

Performant Translations vs Intl DateTime Calendar