pocketjoso/penthouse

Health v2 · maintenance only

Adoption not part of the score

2680 stars · 175 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Penthouse is a Node.js library that generates critical path CSS for web pages, extracting the CSS needed to render above-the-fold content from a full stylesheet using headless Chromium via Puppeteer. It is optimized for running many generation jobs in parallel and is production ready.

Use cases

• generate critical css for my web pages
• inline above-the-fold css to speed up page rendering
• extract critical path css from a full stylesheet
• automate critical css generation for many urls
• reduce render-blocking css on my site

When to choose

• you want to inline critical CSS to eliminate render-blocking stylesheets
• you need to batch-generate critical CSS for many pages in parallel
• you want a mature, proven Node.js tool driven by real headless Chromium rendering

When to avoid

• your project does not use Node.js or cannot run headless Chromium
• you need a maintained tool with frequent updates - the latest release is from late 2023
• you only need CSS minification or linting rather than critical CSS extraction

Facets

library · maturity maintenance

css-framework web-scraping developer-tools web-development frontend performance cli critical-css puppeteer headless-chromium page-speed above-the-fold nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="pocketjoso/penthouse")