flexostudio

It allow the user to translate static texts as the example: 
echo _l(‘cat’);
see http://www.flexostudio.com/
<h3>How to use</h3>
need to make php file that is located inside the theme, it must be said lang_ (languages ??which will translate as lang_en.php) 
 and contains the following code:
<?php $FL_DICT = array(
<pre><code> 'cat' => 'Katze',
 'dog' => 'Hund',
.............
</code></pre>
);?> 
where ‘cat’ => ‘Katze’ ‘regulations is a word and its translation.
in function.php to add the code: 
<?php if(class_exists(‘flexoLanguage’)){
<pre><code>$f = dirname(__FILE__);

if(!flexoLanguage::is_set_language())
 flexoLanguage::set_language('en');//selected language

flexoLanguage::add_dictionary($f);

function _l($key){
 return flexoLanguage::_($key);
}
</code></pre>
} 
else{ 
 function _l($key){return $key;} 
}?>
and everywhere in the code where you write words you want to have a translation in another language and place: 
_l(‘cat’);

flexo-language

Add another language functionality, that is file based without compressions see: http://www.flexostudio.com/

Alex Buran

ConveyThis

ConveyThis is a WordPress translation plugin that helps you translate WordPress into 200+ languages. Build a fast, multilingual site with automatic translation and AI translation backed by Google Translate and ConveyThis — ideal for multilingual WooCommerce stores, blogs, and business sites that need hreflang-ready URLs and SEO-friendly translated pages.
⚡ Fast, Accurate AI Translations – Powered by Google Translate and ConveyThis’ own AI engine, your website gets high-quality translations instantly. Need perfect wording? Refine them manually or order professional translations directly from your dashboard.
🎯 Maintain Your Brand Voice – Build your own AI Language Model with ConveyThis. Customize translations using your glossary, past edits, and style preferences to ensure consistent messaging across all languages.
💡 Flexible Plans for Every Website – Start with a free trial, or pick a plan that fits your needs. Learn more at <a href="https://www.conveythis.com/pricing" rel="nofollow ugc">ConveyThis Pricing</a>.
<h3>What you can do with this WordPress translation plugin</h3>
<ul>
<li>Translate WordPress site – Turn any public site multilingual in minutes; visitors get the right language without manual copy-pasting.</li>
<li>Translate WooCommerce – Product pages, cart, checkout, and emails stay consistent across languages for a multilingual storefront.</li>
<li>Automatic translation – New posts and products are picked up and translated on the fly so your multilingual content stays current.</li>
<li>AI translation – Machine translation plus glossary, edits, and optional pros so quality matches your brand on every multilingual page.</li>
</ul>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/SWV_qAhnWp0?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>
Multilingual Support
<ul>
<li>Translate posts, pages, custom post types, menus, widgets, forms, and media captions.</li>
<li>WooCommerce fully supported – products, checkout, emails, categories</li>
<li>Automatic updates – new content is translated immediately</li>
</ul>
AI-Powered Translation & Quality Control
<ul>
<li>Machine translation powered by Google Translate and ConveyThis AI</li>
<li>Custom AI Language Model ensures translations match your brand tone and terminology</li>
<li>Manual edits, glossary, and translation memory maintain a consistent high quality</li>
<li>Professional translators available directly in your dashboard</li>
</ul>
SEO Optimization
<ul>
<li>Dedicated URLs for each language – choose subdirectories or subdomains</li>
<li>Hreflang tags automatically added</li>
<li>Translated metadata, alt texts, and SEO-friendly URLs</li>
<li>Compatible with Yoast SEO and other SEO plugins</li>
</ul>
Visitor Experience & Engagement
<ul>
<li>Automatic language detection and redirection based on browser settings</li>
<li>Reduce bounce rate and increase visitor engagement</li>
<li>Media localization – translate or replace images and videos per language</li>
</ul>
Customization & Design
<ul>
<li>Fully customizable language switcher – flags, dropdowns, placement options</li>
<li>Glossary management to lock key terms and automate translations</li>
<li>Visual editor allows direct on-page edits for context-aware translations</li>
</ul>
Collaboration & Workflow
<ul>
<li>Multi-user support with roles and permissions</li>
<li>Approval workflows for translation reviews</li>
<li>Collaborate with your team in real time</li>
</ul>
Scalability
<ul>
<li>Supports small blogs to large e-commerce stores</li>
<li>Unlimited pages and languages with premium plans</li>
</ul>
<h3>How this WordPress translation plugin works</h3>
Watch this quick video to see how easy it is to install and configure ConveyThis Translate on your WordPress site. Then follow the steps below to get your website multilingual in just a few minutes.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/Y8hMmJhweus?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>
<ol>
<li>Install the Plugin 
Download ConveyThis Translate <a href="https://downloads.wordpress.org/plugin/conveythis-translate.zip" rel="nofollow ugc">here</a> or install it directly from your WordPress plugins panel.</li>
<li>Sign Up & Create Your Account 
Register for a free account at <a href="https://app.conveythis.com/account/register/" rel="nofollow ugc">ConveyThis App</a>. Confirm your email to activate your account.</li>
<li>Get Your API Key 
Go to your Dashboard and copy your unique API key (it looks like <code>pub_xxxxxxxxxx</code>).</li>
<li>Configure the Plugin 
In your WordPress admin, open the plugin’s configuration page and paste your API key into the designated field.</li>
<li>Choose Languages 
Select your source language and target language(s).</li>
<li>Customize Your Language Switcher 
Adjust the language switcher design and placement to match your website. Use the preview mode to see it live.</li>
<li>Save & Go Live 
Click Save Changes. The language switcher button will appear on your website, allowing visitors to translate pages instantly.</li>
<li>Edit or Refine Translations 
Go to <a href="https://app.conveythis.com/domains" rel="nofollow ugc">My Translation</a> in your account to edit, approve, or enhance translations. Use your glossary or order professional translators if needed.</li>
</ol>
💡 Quick Start Tip: If you want to set up full customization later, just paste your API key and save. The language switcher will appear immediately, and you can translate your first page right away.
<h3>Technical Details</h3>
<ul>
<li>Full Compatibility: Works with all WordPress themes and plugins, including WooCommerce, Elementor, Divi, and Yoast SEO, so your website stays fully functional in every language.</li>
<li>Fast & Reliable: Translations and media are served via ConveyThis CDN, ensuring pages load quickly worldwide.</li>
<li>Secure & GDPR Compliant: All translations are processed safely on ConveyThis servers, respecting privacy and data regulations.</li>
<li>Easy Integration: No coding required — just install, add your API key, and your multilingual site is ready.</li>
</ul>
<h3>Translate WordPress into any language</h3>
ConveyThis Translate supports 200+ languages 🌍, including major global languages and regional variations:
Popular languages: English, Spanish, French, German, Chinese, Japanese, Korean, Arabic, Portuguese, Russian, Italian, Dutch, Ukrainian
Additional languages: Abkhaz, Acehnese, Acholi, Afrikaans, Albanian, Alur, Amharic, Armenian, Assamese, Awadhi, Aymara, Azerbaijani, Balinese, Bambara, Bashkir, Basque, Batak Karo, Batak Simalungun, Batak Toba, Belarusian, Bemba, Bengali, Betawi, Bhojpuri, Bikol, Bodo, Bosnian, Breton, Bulgarian, Burmese, Buryat, Cantonese, Catalan, Cebuano, Chhattisgarhi, Chichewa, Chinese (Simplified), Chinese (Traditional), Chuvash, Corsican, Crimean Tatar, Croatian, Czech, Danish, Dari, Dinka, Divehi, Dogri, Dombe, Dutch, Dzongkha, English, English (UK), English (Australia), Esperanto, Estonian, Ewe, Faroese, Fijian, Finnish, French, French (Canada), Frisian, Fulfulde, Ga, Galician, Ganda, Georgian, German, Greek, Guarani, Gujarati, Haitian Creole, Hakha Chin, Hausa, Hawaiian, Hebrew, Hiligaynon, Hindi, Hmong, Hungarian, Hunsrik, Icelandic, Igbo, Iloko, Indonesian, Inuinnaqtun, Inuktitut, Irish, Italian, Japanese, Javanese, Kannada, Kapampangan, Kashmiri, Kazakh, Khmer, Kiga, Kinyarwanda, Kituba, Konkani, Korean, Krio, Kurdish, Kurdish (Central), Kyrgyz, Laotian, Latgalian, Latin, Latvian, Ligurian, Limburgan, Lingala, Lithuanian, Lombard, Lower Sorbian, Luo, Luxembourgish, Macedonian, Maithili, Makassar, Malagasy, Malay, Malayalam, Maltese, Manipuri, Maori, Marathi, Meadow Mari, Minang, Mizo, Mongolian, Ndebele (South), Nepalbhasa, Nepali, Northern Sotho, Norwegian, Nuer, Occitan, Odia, Oromo, Pangasinan, Papiamento, Pashto, Persian, Polish, Portuguese, Portuguese (Brazil), Portuguese (Portugal), Punjabi, Quechua, Queretaro Otomi, Romani, Romanian, Rundi, Samoan, Sango, Sanskrit, Scottish Gaelic, Serbian, Sesotho, Seychellois Creole, Shan, Shona, Sicilian, Silesian, Sindhi, Sinhala, Slovak, Slovenian, Somali, Spanish, Spanish (Mexico), Spanish (United States), Sundanese, Swahili, Swati, Swedish, Tagalog, Tahitian, Tajik, Tamil, Tatar, Telugu, Tetum, Thai, Tibetan, Tigrinya, Tongan, Tsonga, Tswana, Turkish, Turkmen, Twi, Ukrainian, Upper Sorbian, Urdu, Uyghur, Uzbek, Vietnamese, Welsh, Xhosa, Yiddish, Yoruba, Yucatec Maya, Zulu
Custom languages & dialects: Choose from regional variants including English (UK, Australia), French (Canada), Spanish (US, Mexico), Portuguese (Brazil, Portugal), and Arabic (Egypt, UAE)
<h3>Pricing</h3>
ConveyThis offers flexible pricing tiers to fit any business size:
Free Plan
<ul>
<li>Translate up to 5,000 words and 1 language</li>
<li>Perfect for testing or small websites</li>
</ul>
Starter Plan
<ul>
<li>Translate up to 30,000 words and 1 language</li>
<li>Ideal for growing websites</li>
</ul>
Business Plan
<ul>
<li>Translate up to 100,000 words and 3 languages</li>
</ul>
Pro+ Plan
<ul>
<li>Translate up to 700,000 words and 9 languages</li>
<li>Includes Export and Import (CSV, TMX)</li>
</ul>
Advanced Plan
<ul>
<li>Translate up to 4,000,000 words and 40 languages</li>
<li>Includes glossary, and team collaboration</li>
</ul>
Enterprise Plan
<ul>
<li>Unlimited words!</li>
<li>Access to account manager & engineer</li>
</ul>
✅ All plans include:
<ul>
<li>Visual editor for context-aware translation</li>
<li>Automatic updates for new content</li>
<li>SEO optimization for all translated pages</li>
<li>Full integration with WordPress plugins</li>
</ul>
🔗 Check full details and sign up: <a href="http://conveythis.com/pricing" rel="nofollow ugc">conveythis.com/pricing</a>.
<h3>We’ve Got You Covered – Support You Can Rely On</h3>
ConveyThis Translate provides instant support to all users.
You can contact us:
<ul>
<li>Email: <a href="mailto:support@conveythis.com" rel="nofollow ugc">support@conveythis.com</a></li>
</ul>
Working Hours: 
Monday – Thursday: 10:00 AM – 6:00 PM (EST / GMT-4) 
Friday: 10:00 AM – 5:00 PM (EST / GMT-4)
We respond to all inquiries within 24 hours on weekdays.
<h3>Ready to go multilingual with a WordPress translation plugin?</h3>
Install ConveyThis Translate today and expand your website’s reach globally with a proven WordPress translation plugin. 
Choose the plan that fits your business needs and start translating instantly.
<h3>Useful links</h3>
WordPress Integration Guide – <a href="https://www.conveythis.com/integrations/wordpress" rel="nofollow ugc">https://www.conveythis.com/integrations/wordpress</a> 
Step-by-step instructions to install and configure ConveyThis Translate on your WordPress site.
Pricing Plans – <a href="https://www.conveythis.com/pricing" rel="nofollow ugc">https://www.conveythis.com/pricing</a> 
Find the plan that fits your website, including words, languages, and features.
FAQs / Help Center – <a href="https://www.conveythis.com/faqs" rel="nofollow ugc">https://www.conveythis.com/faqs</a> 
Answers to common questions about plugin functionality and usage.
Word Counter Tool – <a href="https://wordcounter.conveythis.com/" rel="nofollow ugc">https://wordcounter.conveythis.com/</a> 
Check your website word count to estimate translation costs and plan accordingly.
ConveyThis Translate on WordPress.org – <a href="https://translate.wordpress.org/projects/wp-plugins/conveythis-translate" rel="nofollow ugc">https://translate.wordpress.org/projects/wp-plugins/conveythis-translate</a> 
Official plugin page on WordPress.org for reviews, updates, and community support.
Privacy Policy – <a href="https://www.conveythis.com/legal/privacy-policy/" rel="nofollow ugc">https://www.conveythis.com/legal/privacy-policy/</a> 
Learn how your data and content are securely handled by ConveyThis.

Translate WordPress with ConveyThis – AI Multilingual Plugin

Translate WordPress into 200+ languages. AI translation plugin for multilingual websites — WooCommerce, SEO, hreflang, Google Translate.

flexo-language vs Translate WordPress with ConveyThis – AI Multilingual Plugin