Web Accessibility (a11y) Testing

:focus‑visible Tester - Online Keyboard‑Only Focus Ring

Compare :focus and :focus‑visible styling. See which one applies when using mouse vs. keyboard. Accessible focus management.

Accessibility a11y CSS focus‑visible keyboard

Keyboard Accessibility Tester – Online Check Tab Order

Paste HTML snippet and see calculated tab order. Identify missing focusable elements. A11y helper.

Accessibility a11y keyboard navigation

Dialog Focus Manager Demo - Online A11y Trap & Restore

Open a modal and see how focus is trapped and restored. Copy the lightweight focus‑trap code. Accessible pattern.

Accessibility a11y demo dialog focus trap

Screen Reader Text Preview - Online See Hidden A11y Labels

Enter HTML with aria-labels and see what a screen reader would announce. Simulates common patterns. Local educational tool.

Accessibility a11y preview screen reader text

Screen Reader Text Visualizer - Online View Hidden A11y Content

Paste a website's HTML and see which text is only visible to screen readers (e.g., .sr‑only). Preview the accessible layer.

Accessibility a11y screen reader text visualizer

forced‑colors Mode Tester - Online Windows High Contrast

Simulate forced‑colors mode and see how your site looks. Adjust CSS system colors. Make your design accessible.

Accessibility a11y forced‑colors high contrast test

Tab Focus Order Checker - Online Visualize Tab Navigation Flow

Paste HTML and see the order in which elements would receive focus via Tab key. Highlight issues. Local accessibility testing.

Accessibility a11y focus order tabindex

Reduced Motion Demo - Online Prefers‑Reduced‑Motion Switcher

Toggle between full and reduced motion on a live animated page. See how to design for vestibular disorders. Educational.

Accessibility a11y animation demo reduced motion

Custom Focus Ring Styler - Online CSS :focus‑visible Designer

Design a custom focus indicator with outline, offset, and box‑shadow. Preview on interactive elements. Copy the CSS.

Accessibility a11y CSS designer focus ring

prefers‑contrast Tester - Online High/Low Contrast Emulator

Force more or less contrast and see how your page adapts. Test your CSS media queries for accessibility.

Accessibility a11y emulator media query prefers‑contrast

Roving Tabindex Keyboard Nav - Online Accessible List

See the roving tabindex pattern in action. Use arrow keys to navigate a list. Copy the accessible JavaScript pattern.

Accessibility a11y demo keyboard roving tabindex

System Colors Cheatsheet - Online All CSS System Colors

View all CSS system colors (Canvas, ButtonFace, GrayText) as swatches. Click to copy. For forced‑colors adaptation.

Color Tool a11y cheatsheet CSS system colors

prefers‑reduced‑motion Tester - Online A11y Check

Simulate reduced motion preference and test your animations. Copy the media query snippet. Keep your users safe.

Accessibility a11y media query prefers‑reduced‑motion test

aria‑hidden Conflict Finder - Online A11y Audit

Paste HTML and detect elements with aria‑hidden='true' that contain focusable children. An easy a11y win to fix.

Accessibility a11y aria‑hidden audit conflict

Tag: Web Accessibility (a11y) Testing