# system-fonts/modern-font-stacks

System font stack CSS organized by typeface classification for every modern operating system

Repository: https://github.com/system-fonts/modern-font-stacks
Canonical: https://ross.abutalabs.com/products/modern-font-stacks
Homepage: https://modernfontstacks.com
Language: HTML
License: CC0-1.0
License Family: permissive
Topics: css, fonts, system, font-stacks, local, font, system-fonts
Last push: 2026-03-10T21:21:49+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 71, release rhythm 35, longevity 100
- inputs: {"age_days": 1710, "days_push": 176, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3506, forks 55 (observed 2026-08-28T04:08:07.632292+00:00)

## What it is
A collection of copy-paste CSS font-family stacks that use pre-installed system fonts, organized by typeface classification (System UI, Humanist, Neo-Grotesque, Monospace, etc.) for every modern operating system. It eliminates webfont downloads, layout shifts, and flashes of unstyled text for instant font rendering.

## Use cases
- use system fonts instead of downloading webfonts
- avoid layout shift from font loading
- find a CSS font stack for serif or monospace text
- make my website render fonts instantly
- cross-platform font-family declarations
- replace Google Fonts with local system fonts
- pick a typeface classification for my site's typography

## When to choose
- you want zero-latency font rendering with no network requests
- you need consistent typography across Windows, macOS, Linux, Android, and iOS
- you want to reduce page weight by dropping webfont downloads

## When to avoid
- you need a specific brand typeface not installed on user devices
- you require pixel-identical font rendering across all platforms
- you need exotic font weights or glyphs that system fonts lack

## Facets
- artifact type: library
- maturity: active
- function: css-framework, ui-components, theme
- domain: web-development, frontend, web-design
- platform: cross-platform, browser
- tags: css, font-stacks, system-fonts, typography, webfonts, performance, no-download-fonts, web-server

## Member repositories
- system-fonts/modern-font-stacks (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:07.632292+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:35:45.822060+00:00, confidence not recorded.
  - readme: https://github.com/system-fonts/modern-font-stacks (fetched 2026-08-28T04:08:07.632292+00:00, sha 81525461001d)
  - homepage: https://modernfontstacks.com (fetched 2026-08-29T09:29:39.125266+00:00, sha b75e50e91566)
- Data as of 2026-08-30T08:39:29.467469+00:00.