The tags that matter, and the ones that do not
Not every meta tag carries weight. It is worth knowing which is which before you spend time on them.
| Tag | What it does | Weight |
|---|---|---|
<title> |
Names the page. Usually becomes the clickable headline in search results. | High |
description |
Suggests the snippet under the result. Not a ranking factor, but it drives clicks. | High for CTR |
rel="canonical" |
Declares the one address this page should be indexed under. | High |
robots |
Tells search engines whether to index the page and follow its links. | High |
viewport |
Makes the page render at device width. Without it a mobile browser zooms out. | High |
charset |
Declares the character encoding. UTF-8 unless you have a reason otherwise. | Required |
theme-color |
Tints browser UI on mobile. Cosmetic. | Low |
author, language |
Descriptive metadata. Google does not use them for ranking. | Low |
keywords |
Google has ignored it since 2009. Included for completeness only. | None |