unocss/unocss
Some data may be outdated — see provenance labels.
The instant on-demand atomic CSS engine. observed · 2026-10-04
Health v2 · maintenance only
93/100
- Activity 98
- Release rhythm 83
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 4
- age_days: 1846
- days_rel: 34
- days_push: 17
- n_releases_24m: 70
Adoption not part of the score
18972 stars · 996 forks observed · 2026-10-04
What it is AI-extracted, prompt v1, taxonomy v1, 2026-10-19, confidence 0.97
UnoCSS is an instant on-demand atomic CSS engine written in TypeScript. It generates utility classes at build time or in the browser without a heavy runtime.
Use cases
- style components with atomic utilities in a Vite project
- add on-demand utility‑first CSS to a Next.js or Nuxt application
- use a CDN‑served runtime to generate styles directly in the browser
- integrate atomic CSS into Webpack, Rollup, or other bundlers
- enable attributify mode for writing styles as HTML attributes
When to choose
- you need ultra‑fast, on‑the‑fly CSS generation
- you want a zero‑dependency, lightweight solution that works with many frameworks
- you prefer utility‑first styling without a large pre‑compiled stylesheet
When to avoid
- your project requires a full design system with pre‑built components
- you need static CSS extraction only and cannot afford runtime generation
- you are locked into a toolchain that does not support ESM plugins
Facets
library · maturity active
css-framework web-development frontend browser cli atomic-css on-demand utility-first zero-deps vite-plugin webpack-plugin runtime cdn nodejs
10 sources
- readme: https://github.com/unocss/unocss · fetched 2026-10-04 · e60f1bf1af77
- homepage: https://unocss.dev · fetched 2026-10-05 · de4174b29d6f
- site_page: https://unocss.dev/integrations · fetched 2026-10-05 · c6fdcfcb1f8f
- site_page: https://unocss.dev/integrations/vite · fetched 2026-10-05 · 48e4219282f3
- site_page: https://unocss.dev/integrations/nuxt · fetched 2026-10-05 · 5187ea900708
- site_page: https://unocss.dev/integrations/astro · fetched 2026-10-05 · 8d593cc41027
- site_page: https://unocss.dev/integrations/svelte-scoped · fetched 2026-10-05 · 40b782b361db
- site_page: https://unocss.dev/integrations/runtime · fetched 2026-08-29 · 5dd120bad0d8
- site_page: https://unocss.dev/integrations/next · fetched 2026-10-05 · 47e4dd0bedaa
- site_page: https://unocss.dev/integrations/webpack · fetched 2026-10-05 · b2401b53018d
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| unocss/unocss | main | 93 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem