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Free Accessibility & Typography Tools
Test contrast, color vision, alt text, focus order, type scales, and line height for inclusive interfaces.
Accessibility problems are easier to fix before a design is implemented. This category checks colour contrast, simulates colour-vision deficiencies, inspects alt text and landmarks, reviews focus order, and helps you build readable type scales. Use the findings as a practical checklist, then test the finished interface with real assistive technology.
Color Blindness Simulator
Preview images under protanopia, deuteranopia, and tritanopia.
Open toolImage Alt Text Checklist
Check supplied HTML for missing, empty, or weak image alt text.
Open toolReading Line Height Calculator
Find a comfortable line height based on font size and measure.
Open toolFont Pairing Previewer
Preview heading and body font combinations with real text.
Open toolTypography Scale Calculator
Generate a harmonious font-size scale from a base size and ratio.
Open toolREM to PX Visualizer
Convert rem values to pixels and preview different root sizes.
Open toolTouch Target Size Checker
Check button dimensions against touch accessibility guidelines.
Open toolHTML Landmark Inspector
Inspect semantic landmarks and heading structure in HTML.
Open toolFocus Order Visualizer
List focusable elements in keyboard order and find tabindex problems.
Open tool