Typography Playground
Test typography ergonomics with precision controls. Experiment with optical measure, line height, word spacing, and responsive preview widths across verified open-source reference typefaces.
Reference Font:
Inter (Sans Serif (Neo-Grotesque))
Poppins (Geometric Sans Serif)
Playfair Display (Transitional / Modern Serif)
Roboto Mono (Monospace (Engineering))
Noto Sans Gujarati (Indic Script (Gujarati Lipi))
Presets:
Headline
Paragraph
Editorial Quote
Navigation & Menu
Button / Action CTA
Small Label / Metadata
Code / Monospace
Typographic Controls
Variable Font
Font Size
Weight (700)Bold
Line Height (Leading)1.15 (55px)
Letter Spacing (Tracking)0em (0.0px)
Word Spacing0em
Measure (Max-Width)60ch
Alignment
Contrast & Palette
WCAG AAA (17.85:1)
Aa
Aa
Aa
Aa
Aa
OpenType Features
Viewport:
Measure ~4 chars/line (Optimal: 45-75)
Typography makes language visible.
.goafreet-type-preview {
font-family: "Inter", system-ui, sans-serif;
font-size: 48px;
font-weight: 700;
font-style: normal;
line-height: 1.15;
letter-spacing: 0em;
word-spacing: 0em;
font-kerning: normal;
text-align: start;
text-transform: none;
max-width: 60ch;
color: #0f172a;
background-color: #ffffff;
padding: 32px;
font-feature-settings: "liga" 1, "kern" 1;
}Typographic Ergonomics Explained
Leading (Line Height)
Display titles demand tight leading (1.1–1.2) to prevent lines from drifting apart. Body paragraphs need comfortable air (1.5–1.7) so the eye doesn’t accidentally re-read the same line.
Tracking (Letter Spacing)
All-caps text and micro-labels benefit from positive tracking (+0.05em to +0.15em) to restore readability. Heavy display headings often benefit from subtle negative tracking (-0.02em).
The Measure (Line Length)
45 to 75 characters (including spaces) is the golden standard for uninterrupted reading. Lines wider than 80 characters cause eye-fatigue when tracking back to the next line.
Explore in-depth typographic principles in the Goafreet Academy: