GlossaryUpdated 2026-08-28

What Is a Meta Description? SEO Guide

A meta description is the HTML summary of a page that search engines may display under the title. It does not affect rankings directly; its job is earning the click.

Explain It Like I'm 5

The meta description is the little ad under your search-result headline. Google does not use it for ranking, but searchers use it for deciding. And sometimes Google writes its own ad copy instead - only great descriptions get kept.

Understanding Meta Descriptions

The meta description tag summarizes page content for search engines and social platforms. Google may display it beneath the title and URL, but it is advisory: Google rewrites or replaces descriptions frequently, often pulling query-relevant page text instead.

Ranking impact: none directly. Google has stated for years that meta descriptions are not a ranking factor. Their value is click-through: a compelling, accurate description persuades the searcher who saw your title to choose your result.

Writing guidance: 150-160 characters before truncation, active voice, the value proposition up front, an honest promise the page keeps. Including the target query's phrasing increases the odds Google keeps your description, since query-matching text is bolded and retained more often.

For programmatic content, descriptions should still be hand-quality or template-with-variation. Duplicated descriptions across thousands of pages get ignored wholesale.

Types of Meta Descriptions

Retained Description

Query-relevant, compelling, accurate.

Example: A description naming the exact need, bolded at the query, earning the click.

Rewritten Description

Google substituting page text for a weak tag.

Example: A generic "Learn more about our services" replaced by a sentence from the page.

Why Meta Descriptions Matter

Meta descriptions are free SERP advertising space. Rankings bring impressions; descriptions convert impressions into visits.

Not a ranking factor - pure click persuasion
Google rewrites frequently; query-matched text survives
150-160 characters, value-first, honest promise
Unique and varied per page, never templated spam

Best Practices

Lead With the Value Proposition

The first 100 characters carry the pitch. What does the searcher get, and why here?

Mirror the Query Naturally

Query-matching phrasing is bolded and retained more often. Weave the target phrasing in without stuffing.

Keep Every Promise Made

The description is a contract. Pages that fail it breed bounce and pogo-sticking, feeding worse engagement.

Write Unique Descriptions or None

A missing description lets Google pick page text; a duplicated one trains Google to ignore yours. Hand-write the pages that matter.

Common Mistakes

Spending prime effort on 160 characters of stuffing

Fix: Keyword-stuffed descriptions repel clicks and get replaced. Persuasion beats repetition.

Writing descriptions for pages without traffic

Fix: Prioritize money pages and impressions-earning pages. Zero-impression pages need content, not ad copy.

Believing descriptions rank pages

Fix: They do not. Time spent on descriptions is click optimization, correctly invested after ranking content exists.

Descriptions on This Glossary

Each glossary entry here carries a hand-written description leading with the term, the question it answers, and the value of reading further, written to be kept, not replaced.

Frequently Asked Questions

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