Meta viewport checker
Meta viewport checker reads the viewport declaration from a web page. Check the reported content before reviewing mobile layouts and responsive page behavior.
Meta viewport checker: what this tool checks
Meta viewport checker finds the viewport meta tag in a submitted HTML page. The declaration tells a browser how the document requests its initial viewport. Reviewing it is useful when a mobile page appears unusually zoomed out, a template was replaced, or one section behaves differently from the rest of a website.
How to use it
- Paste the complete URL of the page being investigated.
- Submit it and inspect the returned viewport content.
- Compare the declaration with the intended responsive setup, then test the page on actual screen sizes.
Understanding your results
The tool reports the first matching name="viewport" value or indicates that none was found. Presence alone does not establish that the value is appropriate. It also cannot prove that images fit, buttons are usable, or the document avoids horizontal scrolling on a phone.
Frequently asked questions
Does a viewport tag make a website responsive?
It is only one part of the setup. Responsive styles, flexible media, readable text, and suitable component widths still need to work together in the browser.
Can this checker detect a broken mobile menu?
No. It reads a declaration from the fetched HTML rather than interacting with page controls. Open the menu at narrow widths and test its actual behavior separately.
Continue your review
Inspect other declarations with the Meta tags checker, review local styling through the Inline CSS checker, and examine template complexity with the DOM size checker.
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