SEO Basics

Meta tags: title, description, canonical, robots

Meta tags are invisible instructions in your HTML code, crucial for SEO and click-through rates.

⏱ 5 min read · Updated on 22 April 2026

The <title> tag

This is the clickable title displayed in Google's search results. It is one of the most important SEO signals.

Best practices:

  • Between 50 and 60 characters
  • Include the primary keyword at the start
  • Unique on every page

Common mistake: Every page has the same title, or the title exceeds 60 characters (Google will truncate it).

The <meta name="description"> tag

This is the descriptive text shown below the title in SERPs. It does not directly influence rankings but has a strong impact on click-through rate (CTR).

Best practices:

  • Between 120 and 160 characters
  • Include a call to action
  • Unique on every page

The canonical tag

<link rel="canonical" href="https://mysite.com/my-page">

Tells Google the reference URL in case of duplicate content or similar URLs (?utm_source=...).

The robots meta tag

<meta name="robots" content="noindex,nofollow">
  • noindex — asks Google not to index the page
  • nofollow — asks robots not to follow the page's links
  • noindex, nofollow — page has no value for Google

⚠️ A noindex page will disappear from Google's results. Crawlibri alerts you if important pages are accidentally set to noindex.

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