What the meta description is
A meta description is a short summary written into the page's HTML:
<meta name="description" content="A step-by-step cold brew guide: ratios, steep times, and the gear you actually need." />
Visitors never see it on the page. Its job is the search results page, where Google often uses it as the grey snippet under the blue title.
It is not a ranking factor
Google has said for years that the meta description does not influence rankings — and it's one of the few SEO claims with a clean, consistent answer. So why bother? Because the snippet influences clicks. Two results in the same positions can have very different click-through rates purely on how compelling their snippets are, and clicks are the traffic you were ranking for in the first place.
Google rewrites it constantly
Google replaces meta descriptions with text pulled from the page whenever it thinks the page text answers the query better — studies routinely find the majority of displayed snippets are rewritten. That's not a reason to skip writing one. It's a reason to write one that beats the alternative: a specific, honest summary Google is happy to keep, especially for the queries the page most wants to win.
Writing a good one
- Answer "what will I get if I click?" in plain words. Specifics beat adjectives: "ratios, steep times, and gear" outperforms "everything you need to know".
- Aim for roughly 120–160 characters. Longer gets truncated; much shorter looks thin next to competitors.
- Use the searcher's vocabulary. Words matching the query get bolded in the snippet, which draws the eye.
- One unique description per page. Duplicated descriptions across pages are a common reason Google ignores them entirely.
- Don't promise what the page doesn't deliver. A misleading snippet earns the click and then loses the visitor — the pogo-sticking pattern search engines have every incentive to notice.