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inline-css

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NPM

Inline your CSS properties into the style attribute in an html file. Useful for emails.

Inspired by the juice library.

Why inline-css instead of Juice?

  • Uses cheerio instead of jsdom
  • Works on Windows
  • Preserves Doctype
  • Modular
  • Gets your CSS automatically through style and link tags
  • Functions return A+ compliant Promises

How It Works

This module takes html and inlines the CSS properties into the style attribute.

/path/to/file.html:

<html>
<head>
  <style>
    p { color: red; }
  </style> 
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <p>Test</p>
</body>
</html>

style.css

p {
  text-decoration: underline;
}

Output:

<html>
<head>
</head>
<body>
  <p style="color: red; text-decoration: underline;">Test</p>
</body>
</html>

What is this useful for ?

  • HTML emails. For a comprehensive list of supported selectors see here
  • Embedding HTML in 3rd-party websites.
  • Performance. Downloading external stylesheets delays the rendering of the page in the browser. Inlining CSS speeds up this process because the browser doesn't have to wait to download an external stylesheet to start rendering the page.

Install

Install with npm

npm install --save inline-css

Usage

var inlineCss = require('inline-css');
var html = "<style>div{color:red;}</style><div/>";
 
inlineCss(html, options)
    .then(function(html) { console.log(html); });

API

inlineCss(html, options)

options.extraCss

Type: String
Default: ""

Extra css to apply to the file.

options.applyStyleTags

Type: Boolean
Default: true

Whether to inline styles in <style></style>.

options.applyLinkTags

Type: Boolean
Default: true

Whether to resolve <link rel="stylesheet"> tags and inline the resulting styles.

options.removeStyleTags

Type: Boolean
Default: true

Whether to remove the original <style></style> tags after (possibly) inlining the css from them.

options.removeLinkTags

Type: Boolean
Default: true

Whether to remove the original <link rel="stylesheet"> tags after (possibly) inlining the css from them.

options.url

Type: String
Default: filePath

How to resolve hrefs. Required.

options.preserveMediaQueries

Type: Boolean
Default: false

Preserves all media queries (and contained styles) within <style></style> tags as a refinement when removeStyleTags is true. Other styles are removed.

options.applyWidthAttributes

Type: Boolean
Default: false

Whether to use any CSS pixel widths to create width attributes on elements.

options.applyTableAttributes

Type: Boolean
Default: false

Whether to apply the border, cellpadding and cellspacing attributes to table elements.

options.removeHtmlSelectors

Type: Boolean
Default: false

Whether to remove the class and id attributes from the markup.

cheerio options

Options to passed to cheerio.

Contributing

See the CONTRIBUTING Guidelines

License

MIT © Jonathan Kemp