Aa Font Readability

WCAG · accessibility · live typography

Preview your text in real time with any of the 72 available Google Fonts, with customisable size, line height and column width. WCAG rating and multi-user-group simulation.

Font size
16
px
8px16px72px
Typography
Line-height1.6
Letter spacing0em
Line width (max-width)680px
Font weight400
Font family
Color scheme
User profile - suggested size
Visual simulations
Blurred vision (cataract / presbyopia)
Low brightness (dark environments)
Forced dark mode
Colored background (interference)
WCAG AA body
—
min 14px (bold) / 18px
Characters per line
—
ideal: 55-75
Line-height
1.6
WCAG: >= 1.5
Score
—
readability
Content:

Font size is one of the most relevant readability factors: a 14px text might be perfectly readable for a young user but insufficient for someone over 60 or with reduced visual acuity.

This tester:

  • Loads 72 Google Fonts lazily via IntersectionObserver
  • Lets you test size, line height, column width and weight
  • Shows a live preview with your own text content
  • Evaluates WCAG readability compliance
  • Simulates display for users with reduced visual acuity
  • Side-by-side comparison of two configurations