Technical check group
Mobile checks
Without a viewport meta tag phones render the page at desktop width and scale it down, so text is unreadable without pinching. Google treats this as a mobile usability failure. The catalogue currently contains 5 checks in this group.
| State | Evidence | Owner |
|---|---|---|
| Observed | MobilePage-level source retained | Audit |
| Reviewed | Decision recordedScope and value inspected | Human |
| Verified | Public response readOutcome has separate proof | System |
Rule catalogue
Review each condition before turning it into work.
Viewport Not Set
Without a viewport meta tag phones render the page at desktop width and scale it down, so text is unreadable without pinching. Google treats this as a mobile usability failure.
Illegible Font Size
Body text under about 12px forces readers to zoom. Set a base size of 16px and let smaller text be the exception.
Tap Targets Too Small
Links and buttons need roughly 48x48px and space between them, or people hit the wrong one.
Content Not Sized Correctly
Something on the page is wider than the viewport, forcing horizontal scrolling. Usually a fixed-width element or an unconstrained image.
Contains Unsupported Plugins
Flash and similar plugins do not run on mobile at all, so that content is invisible to most of your visitors.