A tag cloud (also known in visual design as a word cloud, wordle, or weighted list) is a logical arrangement of keywords in textual content that visually describes the subject matter of a web page, blog post, or other text. Tags representing the most popular topics are highlighted using bold, larger fonts or increased color saturation to make it easy to see the most popular tags on the page. Tag clouds are used as a navigation or visualisation tool to help users find content easily.