Definition
The meta viewport tag is an essential HTML element for responsive design. It instructs the mobile browser how to adjust the page's width and scale. The standard configuration width=device-width, initial-scale=1.0 allows the page to adapt to each device's screen width. Since Google's Mobilegeddon update in 2015, the absence of this tag can penalize a site's ranking in mobile search results. It has become a technical prerequisite for any modern website seeking to deliver a good mobile user experience.
Key Points
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Practical Examples
Practical example
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Frequently Asked Questions
A meta tag that controls the display and scaling of a web page on mobile devices.
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Last updated: 2026-02-07