SEO Meta Description
Write a unique, specific meta description for every important page, but accept that Google may rewrite it even if you follow best practice.
Start here
- Write a unique meta description for every page that you want to earn clicks; duplicates get ignored or rewritten.
- Keep it between 150 and 160 characters — any longer and Google will cut it off on desktop results.
- Include the target keyword naturally once, but do not stuff it; the description must read like a real sentence.
- Match the description to the search intent: list pages promise lists, guides promise answers, product pages promise details.
- Accept that Google may still replace your description with a pulled snippet if it decides yours is unhelpful.
Plain-English take
A meta description is the one or two lines of text that appear under the blue link in search results. It lives in the <head> of your HTML and tells both searchers and Google what the page is about. Google has said many times that the meta description is not a ranking factor — it will not help you move up the results. What it does is influence the click-through rate. A good description can be the difference between someone clicking your result or scrolling past it.
I think of it as a short ad for your page. The title tag says what the page is called. The meta description says why you should open it. You have about 155 characters to make that case. If you write something vague like "Learn more about our services," you have wasted the space. If you write "Compare 10 budget-friendly running shoes tested on pavement and trail — find your pair under $100," you have told the searcher exactly what is inside and given them a reason to click.
Keywords can appear in the description but should never be forced. Google looks at the description to understand the page, but it also uses other signals. The main job of the description is to earn a click. That is it. If Google decides your description does not match the page well, it will generate its own snippet from the visible text. That happens more often than many SEOs admit.
When it actually matters
It matters most on pages where every percentage point in click-through rate translates into meaningful traffic. Your homepage, your product pages, your cornerstone [blog posts](/blog-seo/) — those deserve a custom description because they are the most-linked and most-searched pages on your site. If one of those pages drops from a 5% CTR to a 3% CTR because Google pulled a messy snippet, you lose visitors.
It also matters when your title tag is vague or forced. The [SEO title](/seo-title/) might be optimised for a keyword but say nothing about the content. In that case the meta description is your second chance to explain what the page actually delivers. I have seen this on category pages where the title is just "Men's Shoes" and the description turns it into "Men's trail running shoes with Gore-Tex lining — reviewed and rated for winter hikes." That changes the click behaviour.
For pages with clear search intent, like a product comparison or a how-to guide, the description should mirror that intent. A guide to writing meta descriptions should say something like "Learn how to write meta descriptions that earn clicks, with examples for e-commerce and blogs." That matches what the searcher expects. If you write a description that sounds like a sales pitch when the intent is informational, you will get fewer clicks even if you rank.
There is a counter-argument: for small sites with less than 1,000 monthly visits, obsessing over meta descriptions might not move the needle. The time is better spent on [on-page SEO](/on-page-seo/) fundamentals like title tags and internal links. But if you already have those sorted, descriptions are a cheap win.
What I got wrong
The biggest mistake I made early on was copying the same description across 30 or 40 similar pages. I thought it saved time. Google ignored most of them and pulled snippets from the page text instead. The result was a search results page full of chopped sentences that did not match any of my pages well. My click-through rates were flat. Once I wrote unique descriptions for each page, I saw a measurable lift in clicks — not huge, but enough to make the effort worthwhile.
I also wrote descriptions that were just keyword lists. Something like "SEO content writing, link building, keyword research, meta tags." That is not a description. It is unreadable and gets rewritten by Google every time. Now I write in full sentences that summarise the page value. The keyword appears naturally, but the sentence does the work.
Another thing I got wrong was ignoring the character limit. I wrote descriptions that were 200 characters long. Google truncated them at different points depending on the device, often cutting off the call to action. On mobile the visible snippet is shorter, so I now aim for 150 characters to be safe. I also use a tool like the [Title Checker](/title-checker/) to check lengths, even though it is designed for titles — the logic is the same.
I used to think a meta description could fix a bad page. It cannot. If the page itself has thin content or a weak [SEO copywriting](/seo-copywriting/) structure, no description will save it. The description is a promise. The page has to deliver.
Next step
Quick answers
Does Google use the meta description for ranking?
No. Google has confirmed that meta descriptions are not a direct ranking factor. They influence click-through rate, which can indirectly affect rankings over time if more clicks signal relevance, but the description itself does not boost your position.
What happens if my meta description is too long?
Google will truncate the snippet at about 155–160 characters on desktop and fewer on mobile. The cut-off point is determined by pixel width, not character count. Parts of your description may be replaced by ellipsis, so keep the key information in the first 150 characters.
Should I put my keyword in the meta description?
Yes, if it fits naturally. Google says keywords in the description are not used for ranking, but they help searchers confirm the page is relevant. Do not stuff keywords — write a readable sentence that includes the keyword once or twice at most.
How often does Google rewrite meta descriptions?
It happens more often than most SEOs expect. Google may pull a snippet from the visible page text if it considers the description unhelpful, too short, too long, or if the page is an article with a clear passage that matches the query better.
Sources
Primary documentation is linked directly. Anything commercial is marked nofollow.
- Google Search Central — How to Write Meta Descriptions — Most authoritative source on how Google treats meta descriptions and snippet generation.
- Moz — What Are Meta Descriptions And How to Write Them — Clear SEO definition and practical guidance from a widely cited SEO reference.
- Seobility Wiki — Meta Description — Concise definition plus common optimisation guidance for definition pages.
Notes from Callum Bennett.