Resource guide
2.5.5 Target Size (Enhanced)
Interactive targets must be at least 44 by 44 CSS pixels in size.
By Calling All Minds·Last updated April 2026
Success criterion
Conformance level
Enhanced accessibility — beyond the legal minimum.
What it means
This enhanced criterion requires all interactive targets to be at least 44 by 44 CSS pixels. This is larger than the minimum requirement at Level AA (2.5.8, which requires 24 by 24 pixels) and represents a much more comfortable touch target for users with motor impairments.
The 44 by 44 pixel requirement aligns with Apple Human Interface Guidelines and Google Material Design guidance, making it a well-established best practice.
In practice
Set a minimum height and width of 44px on all buttons, links, and interactive controls.
Where a visual element must be smaller (such as a small icon), increase the tap area using padding, min-height, min-width, or a transparent border.
Check touch targets on mobile devices. Small links in dense navigation menus often fail this criterion.
Common failures
- Small icon buttons (16px by 16px) with no additional tap area
- Text links within dense navigation with very small line heights
AXS Audit
AXS Audit checks your site against 2.5.5 and flags issues your team can act on straight away. It covers criteria that automated scanners often miss.