filamentgroup/criticalCSS
Finds the Above the Fold CSS for your page, and outputs it into a file observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 8
- Longevity 100
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4452
- days_rel: n/a
- days_push: 1413
- n_releases_24m: 0
Adoption not part of the score
1692 stars · 72 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
CriticalCSS is a Node.js library that identifies the above-the-fold CSS for a given page or file and writes it to a file for inlining. It is archived and no longer maintained.
Use cases
- extract critical css for a page
- inline above the fold styles to speed up page load
- generate critical css from a css file and url
- find which css rules apply above the fold
When to avoid
- starting a new project - the repo is archived and unmaintained
- you need modern browser support or active maintenance - consider alternatives like critical or penthouse
Facets
library · maturity abandoned
css-framework build-tool developer-tools web-development frontend performance cli critical-css above-the-fold phantomjs page-speed archived nodejs
2 sources
- readme: https://github.com/filamentgroup/criticalCSS · fetched 2026-08-28 · 76c6dabd06be
- registry_npm: https://registry.npmjs.org/criticalcss · fetched 2026-08-29 · ef84cd832f9b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| filamentgroup/criticalCSS | main | 10 |
For agents
markdown · JSON · MCP: product_card(name="filamentgroup/criticalCSS")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem