Some people will need to use assistive technology in order to be able to get the information from the text-based content. If the text-based content contains the elements that are non-text content* it is advisable to provide text alternatives so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.
*Non-text content is “any content that is not a sequence of characters that can be programmatically determined or where the sequence is not expressing something in human language”
Online Braille generator
W3C, (n.d.): Understanding Success Criterion 1.1.1: Non-text Content. https://www.w3.org/WAI/WCAG21/Understanding/non-text-content [30.8.2022].