Meta Description

The meta description is the HTML meta tag that summarises a page's content. It does not directly affect ranking — Google confirmed this in 2009 and has reiterated it many times since — but it does affect click-through rate, which indirectly affects how a page performs in search.

Google uses the meta description as the default snippet shown beneath the Title Tag in the SERP, unless it decides a different excerpt from the page body better matches the user's query. This rewriting happens on a substantial percentage of queries, particularly when the page covers multiple topics and Google picks the section most relevant to the specific search.

A useful meta description is between roughly 120 and 160 characters, contains the target keyword (which Google bolds in the SERP, drawing the eye), expresses a clear value proposition for the click, and ends with an implicit or explicit call to action. Avoid clickbait that overpromises — pages with mismatched titles/descriptions and content tend to underperform after the first cohort of disappointed clicks.

Common mistakes: leaving the meta description blank (Google fills it from page text, often poorly); using identical descriptions across templated pages; writing for the algorithm rather than the searcher; and stuffing keywords that read as machine-generated.

For sites at scale — directories, product catalogues, content libraries — auto-generated meta descriptions are acceptable provided the template produces text that reads naturally and references the specific page content. A pattern like "Authority Score, backlink count, and 90-day history for {domain}. Live monitoring · daily refresh" is fine. A pattern that produces "buy {product} cheap online {category} 2025" is not.

Test description changes through Search Console: filter for a specific URL, look at the CTR before and after the change, control for query mix and ranking position. The lift from a single well-written description on a high-impression page can be substantial — a 1% absolute CTR improvement on a page seeing 10,000 monthly impressions is 100 extra visits with no other change.