Readability tests

Readability is the ease with which a reader can understand a written text. The concept exists in both natural language and programming languages, though in different forms. In natural language, the readability of text depends on its content (the complexity of its vocabulary and syntax) and its presentation (such as typographic aspects that affect legibility, like font size, line height, character spacing, and line length). In programming, things such as programmer comments, choice of loop structure, and choice of names can determine the ease with which humans can read computer program code.

indicators for the complexity of texts

readability measure indicating the difficulty of reading a text

readability test