Picture illustrations are helpful in explaining problem and solving also problems and it also makes work easier for mod than the use of words.
Diagrams, infographics are helpful to describe ideas, present information but they have side effects
- Some people don't have good Internet connections, they will get troubles to load images and full pages of each topic
- Some people have very limited bandwidth and images will eat their bandwidth
- You can not copy, quote part of information in infographics ie.
To sum up, I think texts are best in most of cases.