| You can convey information very quickly |
Blind or visually impaired people might not be able to access the information |
| People understand images no matter which language they speak |
If you don't know what the image means then it can't convey the information effectively to you |
| Can communicate ideas and concepts which might be difficult to do with text alone |
Colour blindness might make some images difficult to decipher |
| Images can help to support or add extra impact to textual information |
Poor quality or fuzzy images might be confusing or lose their impact |
| Images such as road signs are easy to see from a distance |
Charts and graphs need to be correctly labeled otherwise they are meaningless |