It’s a short description of a blog/page/post used mostly by search engines. This description is not displayed anywhere on the blog.
Here’s how Google uses it. Whenever someone googles a specific keyphrase Google makes a decision on which websites should be displayed and in what order. For each website Google displays a title and a short description. Google has two ways of putting this description together:
- If the meta description of the website contains the keyphrase used by the user then Google displays the meta description.
- If the meta description doesn’t contain the keyphrase then Google displays a fragment of the website’s content that does contain it.
If you’re using WordPress then meta description for each page or post can be set using the All In One SEO Pack plugin.
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