Sublanguage is a versatile multilanguage plugin designed specifically for WordPress, enabling seamless translation of posts, pages, and custom content. It supports a variety of features including a user-friendly translation interface for posts, terms, and attachments, ensuring efficient management of multilingual content. The plugin operates without duplicating content, using the main language value for untranslated data, and avoids adding markup to content, which aids in maintaining a clean output. Additionally, it enhances SEO by defining language solely through URLs, eliminating the need for cookies.

The latest version of Sublanguage introduces support for Gutenberg, though it remains in beta. Users can translate various elements such as titles, permalinks, and navigation menus with ease. The plugin also supports multisite installations, features a customizable translation UI, and allows users to define which content is translatable. Notably, Sublanguage has undergone security enhancements, with certain under-used features removed to address vulnerabilities, ensuring a more secure user experience.