freemp

A simple, lightweight WordPress plugin for displaying a notification bar at the top of the webpage if 1st-party JavaScript is disabled. If appropriate, the entire website may as well be blocked by a full-page overlay instead of just a small bar.
The plugin offers configuration of background and foreground color, opacity, notification message text and font size. Individual customization by means of CSS snippets is also supported.

JavaScript Notifier

JavaScript Notifier allows you to inform visitors that your website requires JavaScript.

itchiweb

— En français —
L’idée de ce plugin est de donner la possibilité à toute personne ayant des difficultés visuelles (malvoyants, seniors) ou de compréhension (illettrisme) d’accéder immédiatement à une page “accessible” qui leur est dédiée.
En résumé, le raccourci clavier MAJ + A redirigera l’utilisateur vers une URL reservée au contenu “accessible”.
Pour en savoir plus : <a href="http://uak.itchiweb.com" rel="nofollow ugc">uak.itchiweb.com (Mini-site dédié à ce plugin)</a>
— For English people —
By pressing keyboard shortcut SHIFT + A, user is redirected to an accessible page or website corresponding to the URL entered in plugin settings.
The aim of this plugin is to provide quick & easy way for visually impaired people to get immediately “accessible” content.
Basically : SHIFT + A redirects to specific URL

Universal Accessibility Key (UAK) / Initiative MAJ+A

Add an accessibility shortcut to tour Wordpress website / Ajoute le raccourci clavier MAJ+A à votre site Wordpress

JavaScript Notifier vs Universal Accessibility Key (UAK) / Initiative MAJ+A