Why would I want to put information on my web page that is not visible to the typical viewer?

One type of invisible data are metatags.Metadata is important for many reasons. First, metadata helps define the alphabet we are using in our code and website, which makes it possible for people from different places to understand each other. Metatags also help describe our webpage, defining the author and a description of a page. Metatags help us format our webpages so they can be compatible with many different devices. Lastly, metatags help search engines find our pages, which allows the page to be found by others. All in all, invisible data like metadata is important, as it helps us define and describe our page without making our webpage look unappealing to the typical user.