google-fonts

Auto Google Font

Typography system generator for web projects using Google Fonts. Searches 1,923 fonts enriched with typographic personality tags (geometric, humanist, neo-grotesque, etc.), contrast levels, and body-suitability ratings. Generates complete typographic rhythm systems.

Data Files

• data/fonts.csv — 1,923 Google Fonts with: Family, Category, Personality, Contrast, Width, Weight_Range, Variable, Body_Suitable, Quality_Tier (A/B/C), Mood, Best_For, CSS_Import
• data/pairings.csv — 73 proven font pairings with contrast type and scale recommendations
• data/scales.csv — 8 modular type scales with sizes, line-heights, letter-spacing, margins
• references/typographic-rhythm.md — Scale math, line-height tiers, spacing rules
• references/pairing-principles.md — Contrast theory, decision trees, superfamilies

Modes

Single Font (Strict)

One font for headings AND body. Must have weight range covering 400+700. Body-suitable required.

python3 scripts/search.py "modern clean SaaS" --mode single
python3 scripts/search.py "geometric professional" --mode single --tier A

Font Pair (Contrast)

Two fonts with typographic contrast. Searches proven pairings first.

python3 scripts/search.py "elegant editorial luxury" --mode pair
python3 scripts/search.py "tech startup bold" --mode pair

Full System Output

Generate CSS + Tailwind + embed link from font selection + scale choice.

# Single font
python3 scripts/generate-css.py --font "Inter" --scale major-third --format all

# Font pair
python3 scripts/generate-css.py --heading "Playfair Display" --body "Inter" \
  --scale perfect-fourth --format all

# Custom weights and base size
python3 scripts/generate-css.py --heading "Space Grotesk" --body "DM Sans" \
  --heading-weights "400,700" --body-weights "300,400,500,700" \
  --scale minor-third --base 16 --format css

Workflow

1. Understand context — Ask: product type, mood, content density, existing brand
2. Search fonts — Run search.py with relevant keywords and mode
3. Present top 3 — Show Family, Personality, Contrast, Quality Tier, Weight Range
4. Generate system — Run generate-css.py with chosen font(s) and appropriate scale
5. Deliver — Provide CSS custom properties, Tailwind config, and embed link

Quick Decision Guide

Project Type	Mode	Scale	Suggested Search
SaaS / Dashboard	single	major-second	"clean professional geometric"
Blog / Content	pair	major-third	"editorial readable"
Marketing / Landing	pair	perfect-fourth	"bold modern confident"
Luxury / Fashion	pair	augmented-fourth	"elegant premium serif"
Documentation	single	minor-third	"readable accessible humanist"
E-commerce	pair	minor-third	"clean friendly conversion"
Portfolio	pair	perfect-fourth	"creative distinctive"
Enterprise / Gov	single	major-second	"trustworthy accessible corporate"

Scale Reference

Scale	Ratio	Best For
minor-second	1.067	Dense UI, dashboards
major-second	1.125	Apps, admin panels
minor-third	1.2	General purpose
major-third	1.25	Blogs, content
perfect-fourth	1.333	Marketing, editorial
augmented-fourth	1.414	Magazines, expressive
perfect-fifth	1.5	Display-heavy
golden-ratio	1.618	Hero sections

Pairing Contrast Types

• Structure: Serif + Sans (safest, most contrast)
• Proportion: Geometric sans + Humanist sans (subtle, modern)
• Era: Old-style serif + Neo-grotesque sans (dramatic)
• Weight: Single font family, different weights (simplest)

Quality Rules

1. Always use display=swap in Google Fonts embed
2. Prefer variable fonts (fewer HTTP requests, full weight flexibility)
3. Never suggest a single-weight font for body text
4. Verify Weight_Range covers needed weights before suggesting
5. For body text: only suggest Body_Suitable=="Yes" fonts
6. Tier A fonts first, then B, then C
7. Include preconnect hints for fonts.googleapis.com and fonts.gstatic.com
8. Max 3 font families per project (heading + body + optional mono)

Output Includes

• CSS custom properties: font families, sizes, line-heights, letter-spacing, measure
• Tailwind config: fontFamily, fontSize with lineHeight and letterSpacing
• Google Fonts <link> embed with preconnect
• Responsive breakpoint guidance

Showcase Gallery

100 pre-made typography systems applied to fictional projects. Browse at showcase/index.html or reference showcase/showcase.json for programmatic access.

When a user says "show me examples", "pick a style for me", or "what would work for a SaaS app", read showcase/showcase.json and filter by project type to suggest a pre-built system.

Regenerating

python3 scripts/generate-showcase.py

For detailed typographic theory, read references/typographic-rhythm.md. For pairing decision trees, read references/pairing-principles.md.