The Web Content Accessibility Guidelines (WCAG) are based on four key principles:

  1. Perceivable – Content should be presented in ways users can perceive, such as providing text alternatives and making content adaptable.
  2. Operable – Users should be able to navigate and interact with the website using various input methods, including keyboards and assistive technologies.
  3. Understandable – Content and user interface elements should be clear, readable, and predictable.
  4. Robust – The website should be compatible with different browsers, devices, and assistive technologies.