To help with web accessibility compliance throughout your website, there are a few options within the CMS4Schools Settings screen that should be enabled.
When enabling this option, users throughout your website will be able to adjust the font size to their liking. After enabled, there will be six levels of font sizes to adjust to. The controls will appear toward the bottom of each web page. See the screenshot below to see where this is within the CMS4Schools Settings.
Force Alt Text
When enabling this option, the alt text field used in the various CMS4Schools tools becomes required. This helps ensure compliance so that any image uploaded using the CMS4Schools tools must have alternative text entered. The text entered should describe the image so that someone with a vision impairment can have the text read to them giving them an idea of what the image is. See the screenshot below to see where this is within the CMS4Schools Settings.