Meta tags are hidden on the page, but they, as well as all the HTML code on a page, can be viewed by selecting View/Source or View/Page Source from the browser menu.

Meta tags are invisible tags that provide data about your page to search engines and website visitors. Here's a quick guide to why they're so important, and the six kinds that you should prioritize ...

The prerender-status-code meta element is an example of a non-standard meta element that also happens to not be supported by Google.