On-Page SEO
Meta Description
A meta description is the short summary shown under the title in search results, ideally around 150 to 160 characters so it does not get truncated.
It is not a ranking factor, but a sharp, benefit-led description lifts click-through rate, and Google often rewrites it to match the user's query. Write it as ad copy rather than a keyword dump. Note the limit is in characters, not words.
Google generates its own snippet for a large share of results, and the generated version often outperforms the written one because it matches the specific query. That makes descriptions worth writing selectively, not everywhere. Prioritise pages where the search result is the sales pitch: service pages, product pages, and anything you run ads against. For a blog archive of several hundred posts, leaving them unwritten costs almost nothing. Where you do write one, look at the queries the page already earns impressions for in Search Console and write to those, not to the keyword you hoped it would rank for.
Example
An audit service tests two descriptions. "We provide SEO audit services for businesses in Thailand and beyond" earns 2.4% click-through. "Full crawl, Core Web Vitals, and a prioritised fix list in 5 days. 4,900 baht, refunded if we find nothing worth fixing" earns 4.1% at the same position. Specifics and a price beat a category label.
Frequently asked questions
- Is the meta description a ranking factor?
- No. It has no direct effect on ranking. It influences click-through rate, which is why it still matters commercially. Treat it as ad copy for the search result, not an SEO field to stuff with keywords.
- Should I write a meta description for every page?
- For pages that matter commercially, yes. For large archives or thin utility pages it is not worth the effort, and Google will generate a snippet from the page anyway, often choosing text that matches the query better than a generic description would.
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