- Issue: Content is hard to read on mobile
- Impact: Poor mobile UX and engagement; mobile-first indexing penalty risk
- Fix: Fix font sizes, spacing, and tap targets for small screens
- Detection: Crawler, View Source, page-experience tools
What this issue means
On a phone, the page is a struggle: tiny fonts, cramped line spacing, text that requires zooming, or tap targets too close together. Since Google indexes the mobile version of your site, mobile readability is not optional.
Why it matters
The majority of searches are mobile, and Google uses mobile-first indexing — the mobile experience is the experience it evaluates. Poor mobile readability raises bounce and weakens the engagement signals that correlate with rankings.
How to fix it
- Use a base font size of ~16px+ with comfortable line height (~1.5).
- Keep line length readable and paragraphs short on small screens.
- Space tap targets at least ~48px apart.
- Test on real devices and in Chrome's device emulator.
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