The title tag is the HTML element that defines the title of a web page. In SEO terms, it is one of the most powerful on-page signals: Google uses it to understand the subject of a page, display it in search results, and decide which queries it should match.
HTML syntax of the title tag
<head> <title>Your SEO title here (50-60 characters)</title> </head>
In Next.js (App Router):
export const metadata: Metadata = {
title: 'Women Trail Running Shoes | RunningPro',
}Where the title tag appears
In Google SERPs
In the browser tab
In social media previews
| Error | Example | Fix |
|---|---|---|
| Duplicate title | "My Store" on 2000 pages | "[Product] [Attribute] | My Store" |
| Too long | 75 visible characters | 50-60 characters max |
| No keyword | "Ref. 12345-A" | "Salomon XT-6 Women Trail Black" |
| Keyword stuffing | "Shoes Shoes Running Sport" | "Salomon XT-6 Women Trail 2026" |
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