Meta Description
A meta description summarises a page for search results. Learn the length limits, why Google rewrites them, and what AI engines do with them.
TL;DR
A meta description is a short summary of a page, placed in a meta tag in the head. Search engines may display it beneath your title in results, where it functions as the advertising copy for your link. It has never been a ranking factor, and engines frequently replace it with text of their own choosing.
Why meta descriptions matter
Whether or not your text appears, writing one forces a decision about what the page is for and states that decision somewhere machines read.
- Click-through influence: When displayed, a description that answers the searcher question earns the click over a vague competitor.
- Answer-block summaries: AI engines and answer surfaces sometimes lean on the description for a short characterisation of the page.
- Social fallback: Platforms without Open Graph tags often use the meta description for link previews.
- Editorial discipline: Compressing a page into 155 characters exposes pages that have no clear purpose.
How to write a meta description
Answer the query in the first clause
Lead with the thing the searcher wants, not with your company name or a windup.
Stay under roughly 155 characters
Longer descriptions get truncated. Desktop and mobile truncate at different points, so aim short.
Include the primary term naturally
Matching query terms are bolded in results, which draws the eye. Forced repetition looks like spam.
Write one per page
Duplicate descriptions across templates waste the field and get flagged in Search Console.
Be accurate
A description promising something the page does not deliver produces a click and an immediate bounce.
Skip generic filler
Welcome to our website and learn more tell a searcher nothing they did not already assume.
Meta description vs. title tag
Meta description: A one or two sentence summary beneath the title. No ranking weight, and frequently rewritten by engines.
Title tag: The clickable headline of a result. Carries genuine ranking weight and is displayed far more consistently.
If you have limited time, the title tag deserves it. The description is a supporting argument for a click that the title has already largely won or lost.
Descriptions shape how engines summarise you, and getting that summary wrong is a fact-accuracy problem. Findrix tracks how seven AI engines describe your brand against named competitors and flags every mismatch it finds. Every gap comes with the fix already written: technical, content and off-site. The audit is free, takes about a minute, and requires no signup.
Why Google rewrites meta descriptions
Google replaces a substantial share of meta descriptions with text pulled from the page, and the rewriting is usually a signal rather than an insult.
It happens most often when the description is generic, duplicated across pages, missing entirely, or poorly matched to the query the searcher typed. Since one page can rank for many different queries, a fixed description cannot suit all of them.
Write descriptions for your highest-intent pages where the query is predictable, and accept rewriting on pages serving a long tail of varied searches.
Frequently asked questions
Is a meta description a ranking factor?
No. Google confirmed years ago that it does not influence rankings. It affects click-through rate when displayed, which influences performance indirectly without being a direct signal.
How long should a meta description be?
Around 150 to 155 characters is a safe target. Google truncates by pixel width rather than character count, and mobile results cut shorter than desktop, so front-load the important part regardless of length.
Do AI engines use meta descriptions?
Sometimes, as one input among many when characterising a page briefly. They draw far more heavily on the page body, so a good description supports accurate summarisation without determining it.