SEO Tool

Mobile version checker

Viewport, адаптивность, touch-элементы, производительность

The page is loaded with a mobile User-Agent (iPhone Safari)

What does the tool check?

Viewport & responsiveness

  • • Meta viewport settings
  • • width=device-width
  • • user-scalable (zoom)
  • • Touch targets (44×44px)

Images

  • • Lazy loading
  • • srcset for responsiveness
  • • Alt attributes
  • • Dimensions (CLS)

Forms

  • • Mobile input types
  • • Autocomplete
  • • inputmode attributes

Performance

  • • async/defer scripts
  • • Number of resources
  • • Inline styles

Disclaimer: Data is collected from public sources. We do not store the checked URLs or analysis results. Use for lawful purposes only.

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Mobile optimization of a website

Why the mobile version is a priority

More than 60% of traffic comes from smartphones, and Google rates sites by their mobile version (mobile-first). A site that is inconvenient on a phone loses both rankings and conversions.

The tool checks the basic mobile-friendliness requirements: viewport, font readability, button and link sizes, horizontal scrolling.

Common problems

Typical mistakes: a missing meta viewport, a font smaller than 12–14 px, buttons closer than 8 px to each other, content wider than the screen, pop-ups that cover the whole screen.

After fixing, test the pages under real conditions: on slow 3G/LTE and inexpensive devices — that is how a significant part of the audience browses.

Frequently asked questions

What is mobile-first indexing?+

Google indexes and ranks sites by their mobile version. If content is hidden or functionality is missing on the mobile version, this directly affects positions, including the desktop results.

What does the tool check?+

The presence and correctness of the meta viewport, font size, spacing between clickable elements, content width, and the use of outdated technologies like Flash.

Responsive design or a separate mobile version?+

Google recommends responsive design: one URL and one HTML for all devices. Separate m-versions are harder to maintain and easily cause duplicate and redirect problems.

How does mobile-friendliness affect Yandex?+

Yandex takes mobile-friendliness into account as a ranking factor in mobile results and marks convenient sites. Non-adapted sites lose mobile traffic, which makes up more than half of the total.