Definition
A meta description is the HTML attribute (``) that summarises a page in roughly 150 characters — used by Google as the search-result snippet when it judges the description matches the user's query.
Google doesn't always use the meta description. When the algorithm decides a different snippet from the page better matches the query, it'll use that instead — sometimes a sentence ripped from mid-article. Studies suggest Google rewrites the snippet 60-70% of the time. So write the meta description as if it'll be used; don't expect it always will.
The meta description doesn't directly affect rankings, but it heavily affects click-through rate. The same ranking with a stronger snippet earns more clicks — and CTR is itself a quality signal that does affect rankings. A page on position 4 with a great description can outperform position 2 with a generic one.
Origin
The meta description tag appears in HTML 2.0 (1995). Used by early search engines (AltaVista, Excite). Google adopted it as a snippet source from launch in 1998. The current behaviour — snippet often rewritten by algorithm — emerged from the late 2000s.
How it works
- Write per-page descriptions (no duplicates across the site).
- Target 140–160 characters. Mobile shows ~120; desktop 155–160.
- Front-load the value proposition or the answer to the query.
- Include the primary keyword naturally — Google bolds query terms in the snippet.
- Add a CTA-like phrase ('See pricing', 'Learn how', 'Read the guide') where it fits.
- Audit duplicates via Search Console or Screaming Frog.
When to use it
Use when
- On every page that should rank.
- For high-traffic pages, A/B test descriptions for CTR.
- After a Search Console audit reveals duplicate or missing descriptions.
Skip when
- Treating it as a ranking factor. It isn't.
- Stuffing keywords. Stuffed descriptions get rewritten by Google.
Key metrics
- Click-through rate (CTR) from search.
- % of pages with unique descriptions.
- Description length compliance (140–160 chars).
- Snippet retention (does Google use yours, or rewrite?).
Examples
- We rewrote 200 meta descriptions and CTR climbed from 2.1% to 3.4% — 60% relative lift.
- Half their pages shared the same description. Google was rewriting all of them.
- A meta description is sales copy that costs nothing to ship and runs forever.
In practice at Makreate
Makreate's SEO engagements always include a per-page meta-description audit. A recent enterprise client had 800 pages with identical site-wide meta descriptions — Google was generating snippets from page content for all of them, often poorly. We wrote per-page descriptions for the 200 highest-traffic pages, prioritising query match and CTA. Within 3 weeks, average CTR on those pages climbed from 1.8% to 2.9% — and because CTR is itself a quality signal, several pages also moved up in position over the next 8 weeks.
SEO →Common mistakes
- Duplicate descriptions across pages. Google rewrites all of them.
- Generic boilerplate. Wastes the snippet.
- Keyword stuffing. Triggers algorithm rewrites and looks spammy.
- Forgetting to update after major page changes.
Frequently asked
Does meta description affect rankings?
Not directly. But it affects CTR, and CTR is a quality signal that does affect rankings indirectly.
Optimal length?
140–160 characters. Mobile truncates around 120; desktop around 160. Front-load the most important content.
Why does Google rewrite my description?
Usually because it judges your description doesn't match the query. Common fixes: front-load the answer, include the primary keyword, write per-page descriptions instead of templated ones.