Readable means easy to read and understand by users & assistive technology. Some people experience disabilities meet difficulties while accessing Web content. Hard to understand the scientific terms, longer learning curve to use very unusual interfaces, non-descriptive links, and so on.
Barriers for user agents–such as screen readers, voice browsers, and text-to-speech technology–may confusing users. Accessibility problem. The use of proper pronunciation, punctuation, abbreviation, descriptive anchor text, and some other recommendations may help users.
Make text content readable and understandable in Guideline 3.1 WCAG 2.0 has these recommendations:
Advisory Techniques for Guideline 3.1
- Setting expectations about content in the page from uncontrolled sources.
- Providing sign language interpretation for all content.
- Using the clearest and simplest language appropriate for the content.
- Avoiding centrally aligned text.
- Avoiding text that is fully justified (to both left and right margins) in a way that causes poor spacing between words or characters.
- Using left-justified text for languages that are written left to right and right-justified text for languages that are written right-to-left.
- Limiting text column width.
- Avoiding chunks of italic text.
- Avoiding overuse of different styles on individual pages and in sites.
- Making links visually distinct.
- Using images, illustrations, video, audio, or symbols to clarify meaning.
- Providing practical examples to clarify content.
- Using a light pastel background rather than a white background behind black text.
- Avoiding the use of unique interface controls unnecessarily.
- Using upper and lower case according to the spelling rules of the text language.
- Avoiding unusual foreign words.
- Providing sign language versions of information, ideas, and processes that must be understood in order to use the content.
- Making any reference to a location in a Web page into a link to that location.
- Making references to a heading or title include the full text of the title.
- Providing easy-to-read versions of basic information about a set of Web pages, including information about how to contact the Webmaster.
- Providing a sign language version of basic information about a set of Web pages, including information about how to contact the Webmaster.
As an author and user, which one is the most difficult for You? Which one is the most impossible things to do?