Touch Target Test
Verify your website's tap targets for mobile excellence. Ensure all interactive elements are easy to hit, reducing user frustration and accidental clicks.
The Science of Physical Accessibility
Heurilens’ Touch Target Test analyzes the physical ergonomics of your mobile interface. It scans for interactive elements like buttons, links, and inputs to evaluate whether they meet minimum size and spacing requirements for the human finger. It detects issues such as targets that are too small, elements that are too close together, and missing tap-area optimization for thumb-based navigation.
Touch target size is a critical component of mobile usability and accessibility (WCAG). On mobile devices, users lack the precision of a mouse cursor. When tap targets are undersized, users suffer from "fat-finger syndrome" — accidental clicks, failed navigation, and increased cognitive load. Research shows that frustrating physical interactions are one of the leading causes of mobile exit rates.
This analyzer evaluates whether your interface accommodates real-world usage patterns. It checks for the 44x44px standard (Apple) and the 48x48dp standard (Android/Google), ensuring that your design doesn't just look good, but functions perfectly under any condition. Because on mobile, accessibility isn't just about code — it's about the physical reality of the user's touch.
Ergonomic Benchmarking
We test your UI against the physical standards of mobile operating systems. Ensuring consistency across different screen densities and finger sizes.
WCAG Target Compliance
Meeting Success Criterion 2.5.5 (Level AAA) and 2.5.8 (Level AA). Essential for users with motor impairments or situational disabilities.
Masterclass: The Thumb-Zone Interaction Model
Modern mobile UX is defined by reachability. Effective touch targets follow the "Thumb-Driven" hierarchy:
- The Primary Zone: Elements in the lower 2/3 of the screen must be at least 48px to allow for comfortable one-handed use.
- The Safety Margin: Maintaining an 8px 'no-man's land' between tap targets prevents accidental triggering of neighboring links.
- Visual vs. Physical: A tap target can be physically larger than it appears visually. We evaluate the 'Tap Area' padding, not just the visible border.
Common Questions
What is the minimum recommended touch target size?
Apple recommends 44x44 points, while Google recommends 48x48dp. For best results, target 48x48 pixels for all critical call-to-actions.
Does spacing matter more than size?
Both are critical. A large button next to a small link will still cause accidental clicks. Spacing (usually 8-10px) is the 'safety net' for human physical inaccuracy.
How do I test targets for different devices?
Our tool simulates various viewport densities. What feels large on a tablet might be impossible to hit on a mini-smartphone.
Is target size a ranking factor?
Yes. Google's Mobile-Friendly update and Core Web Vitals monitor 'Tap Targets Too Close' as a negative usability signal.