Meta Description
Definition
A meta description is a single line of text in the head of an HTML document, written as a meta element whose name attribute is description and whose content attribute holds the summary. It never appears on the page itself. Search engines read it as a candidate for the snippet under a result, and some link previews fall back to it when richer tags are absent. Google truncates the displayed text at roughly 155 characters on desktop and closer to 120 on a phone, so the specific part belongs at the front. There is no ranking penalty for omitting one and no ranking benefit for writing one — the entire effect is on whether somebody clicks.
Why It Matters
Along with the title, this is the only copy in a search result you control. On a page that already ranks, replacing a vague description with a specific one commonly moves click-through from around 2 percent to 3 or 4 — the same position in the same results, a third more visitors. The cost of neglecting it is quiet rather than dramatic: a page with no description gets a snippet cut automatically from the body, which often starts mid-sentence or on a cookie notice, and forty pages sharing one description tell a reader nothing about which to pick. Google rewrites descriptions it judges unhelpful for a large share of queries anyway, so the realistic goal is to offer something better than the automatic alternative, not to control the wording.
How It Works
A crawler fetches the page, parses the head and stores the description beside the title and the rest of the metadata. At query time it decides, per query, whether your sentence or a passage lifted from the body answers better — which is why one URL shows different snippets for different searches. Since the tag lives in the head of each file, a static site needs one written per page; there is no central place to set it and no inheritance. Messaging apps work differently again: most read Open Graph tags first and only fall back to the meta description when og:description is missing. Keep it under about 155 characters, lead with the concrete noun, and skip keyword repetition, which does not help and reads badly in a result.
Real-World Example
A freelancer publishes a rate card on 99helpers at ravensbourne-rates.99helpers.site — one index.html with a stylesheet beside it. The head has a title but no description, so Google fills the snippet with the first text it finds, which is the navigation label and the word Menu. Adding a single description, reading roughly: day rates, retainer options and payment terms for Ravensbourne design work, updated September 2026, replaces that with something a reader can judge. The page did not move a place in the rankings. It simply started being clicked.
Common Mistakes
- ✕Writing one description and reusing it site-wide — it gives a searcher no way to choose between your pages and is usually discarded
- ✕Padding to 300 characters — everything past roughly 155 is cut, so the point of the sentence disappears with it
- ✕Listing keywords instead of a sentence — it reads as spam to a human, and humans are the only audience the tag has
- ✕Assuming the text is guaranteed — Google substitutes its own snippet whenever it judges yours a poor fit for the query
Related Terms
Open Graph Tags
Meta tags in the head of a page that tell other sites how to draw a link to it — the title, the summary and the picture in a shared card. Without them a link shows as a bare URL.
Static Site
A static site is a website made of finished files — HTML, CSS, JavaScript, images — that are sent to the browser exactly as they are stored. Nothing is assembled on the server when a visitor arrives.
index.html
index.html is the file a web server returns when a visitor asks for a folder rather than a named file. It is the default document for the site root and for every directory inside it.
Landing Page
A page built for one purpose, which people reach directly from an ad, an email or a shared link. It is judged by the share of visitors who do the one thing it asks.
Canonical URL
A canonical URL is the one address you nominate as the real home of a piece of content when several addresses serve it. You declare it with a rel=canonical link in the page head, and search engines use it to decide which version to index.
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