Accessible Data Interfaces
A practical, implementation-focused reference for building WCAG 2.2-compliant data UIs. Real patterns, working code — for tables, grids, charts, keyboard navigation, and ARIA.
Four sections, thirty-four topic guides and nearly 150 step-by-step walkthroughs — from React, Vue and Angular component recipes to screen reader behaviour comparisons and copy-ready testing recipes — each with annotated code, keyboard contracts and diagrams.
Built for frontend engineers, UX specialists, a11y consultants, and design system maintainers who ship production-grade accessible data experiences.
What's Inside
Accessible Data Tables & Grid Systems
Semantic HTML tables, sortable and filterable grids, expandable treegrids, inline editing, bulk selection, cell selection and clipboard, row grouping and totals, responsive tables, column resizing and pagination — with React, Vue, Angular, TanStack and AG Grid recipes.
ExploreCore ARIA & Keyboard Navigation
ARIA live regions, focus management, focus trapping, composite roles, accessible names, keyboard shortcuts and command palettes, row actions and context menus, filtering and announcement strategies — with NVDA, JAWS and VoiceOver notes.
ExploreVirtualization, Charts & Dynamic Data
Accessible virtual lists, chart alternatives and keyboard interaction, chart colour and contrast, dashboards, maps and geospatial data, DOM size tradeoffs, progressive loading and real-time announcements.
ExploreTesting & Auditing Accessible Data Interfaces
Copy-ready testing recipes, axe-core CI pipelines, screen reader smoke tests, manual audit scripts, focus-indicator contrast auditing, and the NVDA / JAWS / VoiceOver / Narrator / TalkBack behaviour differences engineers hit when debugging data UIs.
ExploreStart Here
If you're new to accessible data UIs, these pages cover the highest-impact patterns most commonly failing accessibility audits in data-heavy applications.
scope and headers in complex tables
The single most common table accessibility failure. Learn when to use scope="col", scope="row", and headers on merged or multi-level header structures.
polite vs. assertive aria-live regions
Choosing the wrong politeness level is a common ARIA mistake. This guide explains exactly when each mode is appropriate and how to avoid interrupting screen reader users.
Read guidearia-sort for sortable column headers
How to implement aria-sort on column headers so screen readers announce sort state correctly — including the timing of DOM updates relative to the sort reorder.
roving tabindex for custom data grids
Step-by-step implementation of the roving tabindex pattern for keyboard navigation inside a grid widget — covering arrow keys, Home/End, and focus restoration after DOM mutations.
Read guidemaking react-window accessible
Virtualized lists recycle DOM nodes, which breaks screen reader linear reading. This guide patches the missing accessibility hooks in react-window with working code.
Read guiderestoring focus after closing modals
Focus loss after a modal closes is a WCAG 2.4.3 failure. This guide covers the focus-restoration logic for dialogs that delete or modify the element that originally triggered them.
Read guideNVDA vs JAWS: aria-sort differences
The same aria-sort markup is announced differently by NVDA and JAWS. This guide documents each behaviour, the timing relative to DOM reorder, and how to test for the discrepancy.
axe-core in a GitHub Actions pipeline
Catch accessibility regressions before they merge. A complete CI workflow that runs axe-core against your built data UIs and fails the build on new violations.
Read guideaccessible sortable table in React
A production-ready React sortable table: aria-sort state, a polite live region for sort announcements, keyboard activation, and focus preservation after re-sort.
Latest Additions
New this release: three new table topics, three new ARIA and keyboard topics, chart colour, dashboards and maps, plus testing recipes and manual audit scripts — and framework recipes for React, Vue, Angular, TanStack and AG Grid throughout.
Cell selection & clipboard
Shift+Arrow ranges, one settled range message, and copy and paste that report rejects.
Accessible pivot tables
Two header axes, named totals and explicit headers lists for every cell.
Responsive data tables
Scroll containers, cards that keep their semantics, and what Reflow really requires.
An accessible command palette
Ctrl+K as a dialog, combobox and listbox, with counts and focus handoff.
Confirm or undo destructive actions
Specific confirmations with safe default focus, and undo that keyboard users can reach.
Live regions in React
The four ways React silences announcements, and an announcer that avoids them.
Chart colour & contrast
3:1 marks, dashes and patterns per series, direct labels and forced colours.
Announcing dashboard refreshes
Twelve widgets, one voice: coordinated refreshes and a pause control.
axe scans of every grid state
Loaded, sorted, empty, editing, error and dialog — scanned with one helper.
All Topics
Data Tables & Grid Systems
- Semantic HTML table construction
- Sortable & filterable data grids
- Expandable rows & nested data
- Inline editing & form controls
- Bulk selection & batch actions
- Resizable, reorderable & frozen columns
- Pagination & result-set navigation
- Cell selection & clipboard
- Row grouping & totals
- Responsive data tables
ARIA & Keyboard Navigation
- ARIA live regions for dynamic data
- Focus management in single-page apps
- Keyboard focus trapping & navigation
- Screen reader announcement strategies
- Composite widget roles & states
- Accessible filtering & faceted search
- Accessible names & descriptions
- Keyboard shortcuts & command palettes
- Row actions & context menus
Charts & Virtualization
Why Accessible Data Interfaces?
Most accessibility resources focus on simple UI elements — buttons, forms, links. But enterprise data applications present a different class of challenge: tables with hundreds of rows, charts that visualise real-time streams, virtualized lists that recycle DOM nodes, and grids with inline editing and keyboard-driven bulk operations.
This reference documents the specific WCAG 2.2 success criteria, ARIA roles, and keyboard interaction patterns that apply to these complex data UIs. Every pattern is drawn from production experience and tested against NVDA, JAWS, and VoiceOver.
Each guide includes implementation checklists, working code samples, and explicit screen reader behaviour descriptions so you can build confidently and audit thoroughly.
Every page carries hand-drawn diagrams of the pattern it teaches, and the whole reference ships in a light and a dark theme that both meet AA contrast — including the interiors of the diagrams themselves.