The DOM is the accessibility layer

Every label below is a real HTML element — tabbable, ARIA-annotated, announced by screen readers. Drawn into the canvas with drawElementImage + layoutsubtree, but the accessibility tree is untouched.

Quarterly Revenue

Q1 $42K
Q2 $58K
Q3 $35K
Q4 $71K

Market Share

Enterprise 38%
SMB 27%
Consumer 22%
Gov't 13%

Tab / Shift+Tab to enter a chart · ← → to move between items.
Watch the Screen reader panel above update as focus moves — that's the live aria-label a SR user would hear.