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critical-css-generator

0.0.3 • Public • Published

Critical CSS Generator

Extract critical css (above the fold) for a specific site using puppeteer.

Usage

  1. npm i critical-css-generator
  2. Run the following:
const critical = require('critical-css-generator');
critical.generate({
    url: 'https://www.vistaprint.com/business-cards',
    path: 'critical-business-cards.css',
    viewport: true
});
  1. A critical-business-cards.css file will be generated. Add this into the page!

Options include:

  • url: URL to get critical CSS for.
  • path: Where to output critical CSS. Default is critical.css.
  • deviceName: What device to run it on. Default is Pixel 2.
  • waitFor: How long to wait (in ms) after page navigation before generating critical CSS. Some pages have long load times, so specifying this may be helpful. Default is 20000.
  • viewport: Whether to generate critical CSS (only above the fold content) or generate used CSS for the whole page. Default is true.
  • cssSelectorFilter: An array of CSS selectors (regex) to always include in the generated CSS. For example: [/mobile/]. Default is [].
  • generateSeparateFiles: Generate separate critical CSS files per each CSS file used. The files are stored in a critical/ directory. Default is false.

Keywords

install

npm i critical-css-generator

Downloadsweekly downloads

3

version

0.0.3

license

none

homepage

github.com

repository

Gitgithub

last publish

collaborators

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