# Element “meta” is missing one or more of the following attributes: “http-equiv”, “itemprop”, “name”, “property”.
> Canonical HTML version: https://rocketvalidator.com/html-validation/element-meta-is-missing-one-or-more-of-the-following-attributes-http-equiv-itemprop-name-property
> Attribution: Rocket Validator (https://rocketvalidator.com)
> License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
A `` element with a `content` attribute also needs an attribute that declares what that content means: `name`, `http-equiv`, `property`, or `itemprop`.
The `content` attribute only holds a value. Without one of the four declaring attributes, browsers and search engines have no way to tell whether that value is a page description, a viewport setting, an Open Graph property, or something else, so the tag does nothing. The validator usually reports this when the declaring attribute was misspelled (`nme="viewport"`), accidentally deleted while editing, or stripped out by a CMS or template.
Pick the attribute that matches the metadata you intend: `name` for document metadata such as `description` or `viewport`, `http-equiv` for pragma directives, `property` for Open Graph and other RDFa vocabularies, and `itemprop` for microdata.
## Invalid example
This `` tag has a value but nothing that identifies it as the viewport configuration:
```html
Example page
```
## Valid example
Adding `name="viewport"` gives the value its meaning:
```html
Example page
```