a11yBox is a SaaS accessibility widget for websites.

There is a free plan

You do not need to pay to get started. Sign up at app.a11ybox.co.il, create a free license for one site, copy the token into the plugin, and you are done. No credit card. You can later upgrade to a paid plan based on pageviews and the number of domains.

This plugin:

Embeds the widget script using a license token from the a11yBox portal (app.a11ybox.co.il).
Automatically excludes the script from cache and JavaScript optimization plugins, so it is not delayed, minified, or concatenated in a cached copy.
Shows the admin screens in Hebrew, English, or Spanish, matching the WordPress user language.

Cache exclusions (when the matching plugin filters are available):

WP Rocket (Minify / Defer / Delay JS)
LiteSpeed Cache
Autoptimize
Perfmatters
SiteGround Optimizer
Flying Scripts / FlyingPress
Hummingbird
WP Optimize
NitroPack
Swift Performance
WP Fastest Cache
W3 Total Cache
Clearfy
Merge + Minify + Refresh
Asset CleanUp
Jetpack Boost
Cloudflare Rocket Loader (data-cfasync="false")
Breeze (Cloudways) and other generic exclude filters

Widget appearance, languages, and tools stay in the a11yBox portal. This plugin does not duplicate them.

a11yBox – Accessibility Widget by UpNext

There is a free plan