Snippets are essentially pieces of content that may be used in more complex page or section layouts (i.e. Panel pages and Mini panels) and may be reused in many different places on your website. Unlike Nodes, they have no publishing options, they cannot be categorized into groups and they do not render their own pages. They also require an administrative label for easy identification in the backend.
All Snippets can be found by navigating to Content, and then clicking on the top-right tab called Snippets. To add a Snippet, click on the link “Add Content Snippet”, as shown below: