HTML / XML / JS, low-level validity (cross-cutting)MediumVerified
Tap targets too small
What it is
Mobile controls too small/close.
Why it matters
Mobile usability problem.
How to fix it
Size/space tap targets adequately.
Impact
Low-medium. Direct.
Evidence
Mobile usability includes tap-target sizing. Google Search Central, Understanding page experience in Google Search results; Google Search Central, Mobile-first indexing best practices
Sources