Accessibility Crawler

An automated tool that systematically explores an application's user interface—by simulating taps, swipes, and navigation—to discover screens and UI components and then evaluate each against accessibility rules without human involvement. On Android, crawlers typically drive the app through the Accessibility Testing Framework and inspect runtime metadata (such as AccessibilityNodeInfo) or screenshots to detect issues like missing content descriptions, unfocusable elements, or duplicate labels. Accessibility crawlers scale accessibility testing across large apps but generally only detect a minority of issues that real screen reader users encounter, particularly struggling with subjective problems such as inadequate labels, unnatural focus order, and poor feedback.