Most countries have laws that forbid discrimination against people with disabilities in a general sense, and an increasing number are introducing guidelines which address the need for websites to be accessible to people with disabilities.

Websites that lack accessibility features are not able to be used by people with disabilities because they are not able to be interpreted by the technology that they use to browse the internet, such as text-to-speech software. A website with accessibility features therefore allows people with visual impairment, a lack of mobility, auditory impairment, photoepileptic seizures or cognitive disabilities to perceive, understand, navigate, and interact with the website.