Free Accessibility Checker

I recommend using this tool to confirm your site is accessible: 
accessibilitychecker.org

1. Find out if your website is Accessible and Compliant
2. Scan your website for free, identify accessibility issues, and get exact instructions on how to fix them.
3. "Export" the results and email them to me if you need help making the necessary changes.  
   
   

Alternatives:

AccessiBe - I tested the AccessiBe platform and their accessibility widget is blocked by uBlock and other popular ad blocking scripts.  My suggestion is to fix the underlying issues by making the adjustments in your CMS, or at the server level, rather than relying on a third party 'band aid widget' 

See Also:
Are you using an accessibility overlay to help disabled users? Don’t!