WordPress Lang Plugins

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

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

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

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.

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