MobiDevices Slug Translate

MobiDevices Slug Translate is an SEO plugin that automatically translates post slugs, page slugs, and media file names from many languages, including Russian, Ukrainian, Spanish, French, German, Italian, Portuguese, and Polish, into English.

Developed by the team behind MobiDevices.com, it is built for publishers who need clean English URLs across multilingual WordPress sites.

The plugin uses the Langbly API. For text with non-ASCII characters, Langbly auto-detects the source language. For plain Latin text on Spanish, French, German, Italian, Portuguese, and Polish sites, the plugin uses the site locale as the source language. If the API key is missing or the API is unavailable, the plugin falls back to local transliteration.

Key features:

• Already clean ASCII slugs such as hello-world are kept as they are and are not sent for translation.
• To keep URLs shorter and cleaner, the plugin removes common English articles and prepositions from translated slugs.
• The admin interface is localized for English, Russian, Ukrainian, Spanish, French, German, Italian, Portuguese, and Polish.

External Services

This plugin connects to the Langbly translation service to translate post slugs and media file names.

This service is used only when:

• you save or publish a post or page that needs slug translation, the text is not already a clean ASCII slug, and either contains non-ASCII characters or is plain Latin text on a supported site locale;
• you edit a post or page permalink in the Classic Editor and WordPress requests a sample permalink;
• you upload a media file whose filename needs translation;
• you click the button to test the API key in the plugin settings.

The plugin sends the following data to Langbly:

• the text that needs translation, such as a post title, slug text, or media filename;
• the target language code; the source language is auto-detected for non-ASCII text and is set from the site locale for supported plain-Latin text;
• your API key in the request headers.