Meta Tag

Meta tags are HTML elements in the head of a page that describe it to browsers and search engines without showing on the page itself. Some steer how your page is crawled and displayed; others are quietly ignored. Knowing which is which keeps your markup lean.

The meta tags that still matter

• Meta description — summarises the page for the search snippet and drives clicks.
• Viewport — tells mobile browsers how to scale the layout; missing it hurts mobile usability.
• Robots — controls indexing and link-following with values like "noindex" or "nofollow".
• Charset — declares character encoding so text renders correctly.

The title element and the canonical link technically aren't meta tags, but they share the same head and do real SEO work, so they're often grouped in.

A quick audit example

A SaaS blog quietly dropped a strong post from Google's index. The cause sat in the head: a stray robots meta tag set to "noindex" that a template had applied site-wide during a redesign. Nothing looked wrong on the visible page. Once corrected to "index, follow", the post was recrawled and back in results within a week. Meta tags are invisible, which is exactly why they reward auditing as part of your technical SEO.

Tags that no longer help

The keywords meta tag carries no ranking value and can be dropped. Old directives like "revisit-after" are folklore that crawlers ignore. Keep only the tags that change how a real browser or crawler behaves — the meta description above chief among them — and let the rest go.