Lang Forge – Multilingual, Translation & hreflang SEO

Lang Forge is a modern multilingual plugin that handles multilingual URL routing (4 URL formats), manual post and string translation, a language switcher, hreflang SEO, RTL layouts, a glossary, WooCommerce, unlimited languages, and one-click migration from WPML / Polylang / TranslatePress. It ships a REST API and WP-CLI commands and is a drop-in WPML compatibility layer. AI translation is available as the Lang Forge Pro add-on.

Switching from WPML, Polylang or TranslatePress?

Lang Forge imports your existing setup instead of making you start over. The migration tool reads your current plugin’s data and recreates it: translated posts and their language links, string translations, taxonomy translations, and your language URL structure.

The migration is non-destructive. Your current plugin stays installed and untouched until you confirm the result, so you can compare both side by side and roll back if anything looks wrong.

If you are coming from WPML, you can also keep your existing theme and plugin code working unchanged. Lang Forge ships a WPML compatibility layer that implements the functions third-party code expects — icl_object_id(), icl_get_languages(), icl_get_current_language() and icl_get_default_language() — so integrations built against WPML keep working without edits.

Free

• Unlimited languages
• Multilingual URL routing — 4 formats (directory /fr/, query ?lang=fr, subdomain, domain mapping)
• Manual post / page / CPT translation linking
• Manual string translation (auto-registered via gettext)
• Language switcher (widget / shortcode / admin bar)
• hreflang tags with x-default, plus an hreflang sitemap
• Glossary
• WooCommerce product and store string translation
• WPML compatibility layer (icl_object_id(), icl_get_languages(), etc.)
• REST API + WP-CLI commands
• One-click migration from WPML / Polylang / TranslatePress
• RTL support (ar/he/fa/ur/ku)

Pro

• AI translation with translation memory
• Visual editor (side-by-side WYSIWYG translation)
• Frontend translation
• Elementor + ACF integration
• Content diff + Translation QA
• Analytics dashboard
• Import / export XLIFF + CSV
• Bulk AI translation, translator roles, media/comment translation, live preview

Part of the Forge Suite — bundle includes Rank Forge, Form Forge, Field Forge.

Third-Party Services

Lang Forge connects to the following third-party services. Basic translation, the language switcher, string translation, and hreflang work fully offline with no external calls — data is sent only when you use an AI feature.

• Avakode API (https://avakode.com) — powers AI translation and AI quality checks, and validates your license. When you run an AI translation or QA check, the source post content, the target language, your site URL, and your license key are sent. The Avakode API routes AI requests to OpenAI and/or DeepL on your behalf. Terms: https://avakode.com/terms — Privacy: https://avakode.com/privacy
• OpenAI (used by the Avakode API to perform AI translation) — Terms: https://openai.com/policies/terms-of-use — Privacy: https://openai.com/policies/privacy-policy
• DeepL (used by the Avakode API to perform AI translation) — Terms: https://www.deepl.com/en/pro-license — Privacy: https://www.deepl.com/en/privacy