lang

Make your site multilingual — translate posts, WooCommerce products and strings, add a language switcher and correct hreflang SEO.

Add an abbreviation format button to the formatting toolbar in the block editor.

Add lang attribute to the text formatting toolbar in the block editor.

Add a custom HREFLANG meta box on your post to manually edit the link between your post and a translation (which could be outside your domain).

This plugin slice the language attribute for HTML tag, For example: lang="en-US" to lang="en"

CHL-Change HTML Lang is a simple WordPress SEO plugin for changing HTML language attribute value in the header.

Site Language Definition is a simple plugin for forcing the web browser to know what language your site is in.

This wordpress plugin adds a meta box for specifying html lang="" language per post.

Add language-tags via TinyMCE to comply with the Web Content Accessibility Guidelines.

Add a flag icon to link corresponding to the hreflang attribute.