SEO Glossary · On-Page SEO

What Is Metadata (in SEO)?

Metadata in SEO is the set of HTML tags in a page's <head> that describe the page to search engines and browsers - most importantly the title tag, meta description, robots tag, and viewport. It is "data about the page" rather than visible content.

The metadata that matters for SEO

The essentials are the title tag (your SERP headline), the meta description (the snippet), the meta robots tag (index/noindex instructions), the canonical tag (the preferred URL), and the viewport tag (mobile rendering). Open Graph and Twitter Card tags are metadata too, controlling how links look when shared.

Note that the old meta keywords tag is not metadata Google uses - it has been ignored for over a decade.

Pro tip
Keep every page's metadata unique. Duplicate titles and descriptions across pages dilute relevance and waste the chance to target different searches.
Key takeaways
Metadata is the HTML in your <head> that describes the page.
Key types: title tag, meta description, robots, canonical, and viewport.
The title, robots, and canonical tags affect rankings and indexing.
The legacy meta keywords tag is ignored - do not waste time on it.

Put it into practice with Soro

Understanding metadata (in seo) is one thing - applying it across every page is another. Soro automates SEO content end to end, researching keywords and publishing optimised articles so your site ranks on Google and gets cited by AI. See how Soro works.

Frequently asked questions

What is the difference between metadata and meta tags?

Meta tags are the specific HTML elements; metadata is the broader term for the descriptive information they (and tags like the title) provide about a page.

Is metadata a ranking factor?

Some metadata is - the title tag influences rankings, and the robots and canonical tags control indexing. The meta description is not a direct ranking factor but affects click-through rate.

Keep learning

Browse the full SEO glossary