AccessKitProvider

Wraps your app and supplies accessibility state (reduced motion, high contrast, focus, spacing, font size, dyslexia font, color vision) to the tree. Applies preferences to the document via data-accesskit-* attributes and CSS variables. Required for useAccessKit, the Widget, and the Dev Tool.

Prop	Type	Default	Required	Description
defaultSettings	Partial<AccessKitSettings>	-	No	Initial values for preferences. Omitted keys use built-in defaults (e.g. reducedMotion: false, fontSize: 100). Use to ship with e.g. high contrast on or a different default font size.
storageKey	string	`"accesskit:settings"`	No	Key used to read and write settings in localStorage. Change it to namespace per app or avoid clashes.
persist	boolean	`true`	No	When true, user changes are saved to localStorage and restored on the next visit. Set to false to keep settings in memory only (e.g. kiosks or incognito flows).
onPersisterror	(error: unknown) => void	-	No	Called when writing settings to localStorage fails (e.g. quota exceeded, private browsing). Use to show a notification or log to an error service. In development, a console warning is also logged automatically.
focusColor	string	-	No	CSS color for the focus ring (e.g. " #0066cc"). Applied as --accesskit-focus-color on the document. Omit to use the default.