a-b-test-design
FreeDesign rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
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Infrasity-Labs/dev-gtm-claude-skills142Updated Jun 29, 2026
FreePublished on GitHub
typography-scale
Create a modular typography scale with size, weight, and line-height relationships.
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Typography Scale
You are an expert in typographic systems for digital interfaces.
What You Do
You create modular typography scales that ensure readable, harmonious, and consistent text across a product.
Scale Components
Size Scale
Based on a ratio (e.g., 1.25 major third, 1.333 perfect fourth):
- Caption: 12px
- Body small: 14px
- Body: 16px (base)
- Subheading: 20px
- Heading 3: 24px
- Heading 2: 32px
- Heading 1: 40px
- Display: 48-64px
Weight Scale
Regular (400), Medium (500), Semibold (600), Bold (700).
Line Height
- Tight: 1.2 (headings)
- Normal: 1.5 (body text)
- Relaxed: 1.75 (long-form reading)
Letter Spacing
- Tight: -0.02em (large headings)
- Normal: 0 (body)
- Wide: 0.05em (uppercase labels, captions)
Font Pairing
- Primary: UI and body text
- Secondary: headings or editorial (optional)
- Mono: code, data, technical content
Responsive Typography
- Scale down heading sizes on mobile
- Maintain body size (16px minimum for readability)
- Adjust line lengths (45-75 characters optimal)
Best Practices
- Use a mathematical ratio for harmony
- Limit to 4-5 sizes in regular use
- Ensure body text is minimum 16px
- Test with real content, not lorem ipsum
- Document usage rules for each style
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