Input file requirements for WCAG 2.0 (Level AAA) compliance
To make sure that the input file is compliant with the accessibility standards of the Web Content Accessibility Guidelines (WCAG) 2.0 Level AA, check the following:
- WCAG 1.4.6 – Enhanced Contrast requirement
- The visual presentation of text and images of text have a contrast ratio of at least 7:1.
- WCAG 1.4.8 – Visual presentation
- The input file should meet these requirements:
- Width is no more than 80 characters or glyphs (40 if CJK).
- Text is not justified (aligned to both the left and the right margins).
- Line spacing (leading) is at least space-and-a-half within paragraphs, and paragraph spacing is at least 1.5 times larger than the line spacing.
- WCAG 1.4.9 Images of Text (No Exception)
- Images of text are only used for pure decoration or where a particular presentation of text is essential to the information that is being conveyed.