The sits as <meta name="description"> in the page head and is normally invisible to visitors. In the search result it can appear under the title, acting like a small advert that invites the click.

It is not a direct ranking factor, but it influences the . Guidance:

  • aim for roughly 120 to 160 characters, with no fixed Google limit,
  • put the key message in the first 100 to 120 characters,
  • give every important page its own description,
  • mention the main early and show a concrete benefit.

Google does not always use the supplied description: if a from the page content fits the query better, or the description is too generic or duplicated, Google generates its own snippet. Studies show Google frequently rewrites meta descriptions.