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X-Height (Typography)

What is X-Height (Typography)?

X-Height is a micro-detail in Typography that strongly influences the legibility of body text. A typeface with a large x-height means the lowercase letters take up more vertical space, making the font look larger and often easier to read at small sizes.

Why X-Height Matters in UX and Accessibility?

The legibility of the main body text is critical for keeping users engaged and improving the User Experience (UX).

  • Readability: A generous x-height makes it easier for the eye to distinguish between characters, especially for users with visual impairments, directly addressing Website Accessibility.
  • Visual Hierarchy: Consistent text sizes and a legible x-height ensure the reader's focus is on the large, bold headlines (the Visual Hierarchy) rather than struggling with the body copy.
  • Brand Identity: The x-height choice contributes to the overall aesthetic and professional look of the Brand Identity.

Example from Flowtrix Projects

In the Figma design phase, Flowtrix carefully selects typefaces with an optimized X-Height as part of our Typography strategy. This ensures maximum legibility for all body copy, which is a key component of a superior User Experience (UX) and a requirement for meeting Website Accessibility standards for our enterprise clients.

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Design

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