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Title tags and meta descriptions

The title element and meta description sit next to each other in the HTML, but Google uses them differently. Both can influence how a result is presented and whether a searcher understands the page before clicking.

Two elements, two different jobs

The confusion in this area comes from treating the pair as one topic. They sit next to each other in the head and are edited in the same field of every CMS, but the engine does entirely different things with them.

Title elementMeta description
Primary Search roleA source Google can use for the title linkA possible source for the snippet
Rewritten by GoogleSometimesOften
Can vary by query or deviceYesYes
Guaranteed to be used as writtenNoNo

Google can generate a title link from the title element, visible headings and other prominent text, while snippets are primarily generated from page content and may sometimes use the meta description. Write both as accurate summaries, not as controls that force a particular result.

Writing a title that survives

A title should name the page's topic in the words a searcher would actually use, and stay short enough not to be cut. The failure modes are more consistent than the successes.

  • Front-loading the brand pushes the distinguishing words past the truncation point on every page.
  • A template that produces the same title for fifty pages tells the engine those pages are interchangeable.
  • Keyword repetition inside one title reads as spam to a person before it does to a machine.
  • A title that describes the site rather than the page is a missed opportunity on every listing.

The useful discipline is that a title should still make sense read alone, out of context, in a list of ten competing results — because that is exactly the situation it exists for.

There is no fixed character limit

Google documents no hard length limit for either the title element or meta description. Title links and snippets are truncated as needed, typically to fit the device width, and Google may generate different text from other page content.

Fixed character counts are therefore an editorial convenience, not a Search requirement. Put the distinguishing information early, keep the wording concise, and review localized results on real devices instead of assuming one English character target works for every writing system.

Why Google rewrites your description

Google generates the snippet, and it uses your meta description when it judges it the best available summary for that query. When a different passage of the page answers the query more directly, it uses that instead — and this is usually the right call, because the description is written once while the queries are endless.

Cause of rewritingWhat to do about it
Another passage answers the query betterNothing — this is the system working
The description is generic boilerplateName what this page specifically covers
It duplicates other pages' descriptionsGive each page a description only it could have
It is missing entirelyWrite one; the engine will improvise otherwise

The realistic goal is not to prevent rewriting. It is to make your description the best answer often enough that it gets used for the queries you care about, and to ensure that when Google does improvise, the page gives it good material to improvise from.

The tags that do nothing, and the ones that do

Not every tag in the head earns its place. Google states plainly that it does not use the meta keywords tag, and has said so since 2009. Meanwhile a handful of others are genuinely load-bearing and get less attention than they deserve.

TagEffect
meta keywordsNone — unused for ranking
meta robotsReal — controls indexing and snippet behaviour
link rel=canonicalReal — nominates the URL to index
meta viewportReal — required for mobile rendering
Open Graph tagsNot for Search — they shape social previews

Try it on your own site

Questions and answers

Why did Google replace my meta description?

Google rewrites the snippet when it judges another passage a better answer to the query. A description that names the topic and matches intent is replaced less often, but preventing rewriting entirely is not the goal — being useful when it is used is.

Do meta keywords do anything?

No. Google states plainly that it does not use the meta keywords tag, and has said so for many years.

How long should a title be?

Google publishes no hard length limit. Keep it descriptive and concise, put the distinguishing words early, and expect title links to be truncated or generated from other page signals when Search decides that is more useful.

Is the meta description a ranking factor?

No. It is the text under your listing and it gets matched and bolded against the query, so it decides clicks rather than position. That makes it worth writing well for a different reason than the title.

Should every page have a unique description?

Yes, where the page is worth ranking. Duplicated descriptions tell the engine the pages are interchangeable and invite it to write its own instead.

Do Open Graph tags help my search rankings?

No. They shape how a link previews on social platforms. They are worth setting for that reason, but they are not a substitute for a title element and a meta description.