Many code elements/tags could be added to a web page to improve its rank on Google and other search engine.
These added tags will make it easier for the search engines and social media robots to read and understand the structure and subject of your web page.
You can simply name it “What behind the scene” elements.
If you are using WordPress or other Content Management System on your blog, then you don’t have to worry about the creation of these code.
Different Plugins are out there to generate and append it to your page when the right plugins are used.
This infographic explains the most important tags we could add to a web page and why it important to use them.