This plugin modifies the global HTML language attribute on a site, converting specific regional language codes to their generic base form. It is designed for site administrators and developers who need to standardize language declarations for improved accessibility compliance and search engine clarity.

• Core Language Standardization: Changes attributes like lang="en-US" or lang="es-ES" to lang="en" and lang="es" respectively, applying the modification site-wide.
• Automatic Processing: Operates without manual intervention, filtering the language attribute output directly from the site's core localization functions.
• Lightweight Implementation: Functions as a single-purpose utility with minimal code, avoiding unnecessary performance overhead on your site.
• Improved Accessibility: Helps screen readers and other assistive technologies interpret the primary content language more accurately by removing regional specificity.
• Simplified SEO Signals: Provides a clearer, consistent language signal to search engines by focusing on the primary language code.