nilsnh

This wordpress plugin adds a meta box for specifying html lang=”” language per post.
<h3>The problem this plugin solves</h3>
WordPress allows us to specify site-wide language defaults like so:
<pre><code><meta http-equiv="content-language" content="es">
</code></pre>
The problem comes about if you have blog posts in various languages. Personally I write posts in either English or Norwegian. And since English is set as the site-wide language posts that are in Norwegian end up looking kinda weird due to weirdly placed <code>-</code> (hyphenations).
<h3>Solution</h3>
The solution is to add more specific html <code>lang</code> attributes when needed.
<pre><code><article id="" class="" lang="vi">
</code></pre>
For example this specifies that the post is in Vietnamese. This plugin enables a meta box when editing posts where you may specify the post’s language.
<h3>Contributing</h3>
This plugin was made in a jiffy. But by all means do suggest improvements. For instance the plugin obviously lacks testing code.
<h3>Licensing</h3>
Copyright 2014 Nils Norman Haukås
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License, version 2, as 
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Set HTML lang attribute per post

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

Whodunit

Jb Audras

Guillaume TURPIN

Disclaimer: This plugin was merged into WordPress Core. It is not relevant anymore to install it. I plan to ask for a removal from the repo by the end of the year.
The intent of this plugin is to provide a way to ensure any language change in the content of a page is indicated to assistive technologies. This feature is not available by default in the block editor so it is difficult to make a website fully compliant to WCAG guidelines using the block editor for now.
We clearly hope this feature will be natively implemented in the block editor in middle term, because this very simple feature is really needed to help people to create accessible websites. But in short terms, we need a solution and this plugin is a solution you may want to use to make your website compliant to accessibility guidelines 🙂
For more context: this plugin helps you to make your website compliant to the Web Content Accessibility Guidelines (WCAG) success criterion 3.1.2: “Language of Parts”. The purpose of this success Criterion is to ensure that user agents can correctly present content written in multiple languages.
As per Web Content Accessibility Guidelines:
This makes it possible for user agents and assistive technologies to present content according to the presentation and pronunciation rules for that language. This applies to graphical browsers as well as screen readers, braille displays, and other voice browsers.
Both assistive technologies and conventional user agents can render text more accurately if the language of each passage of text is identified. Screen readers can use the pronunciation rules of the language of the text. Visual browsers can display characters and scripts in appropriate ways.
This is especially important when switching between languages that read from left to right and languages that read from right to left, or when text is rendered in a language that uses a different alphabet. Users with disabilities who know all the languages used in the Web page will be better able to understand the content when each passage is rendered appropriately.

Lang Attribute for the Block Editor

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

Set HTML lang attribute per post vs Lang Attribute for the Block Editor