Convert JSON into pre-processor ready CSS

npm install json2css
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json2css Build status

Convert JSON into pre-processor ready CSS.

This is initially designed for generating coordinates for a mapping of sprites on a spritesheet. However, it should be usable for anything related to dimensions/positions and CSS.

Getting Started

Install the module with: npm install json2css

// Compilation
var json2css = require('json2css'),
    obj = [
      {'name': 'github', 'x': 0, 'y': 0, 'width': 10, 'height': 20, 'total_width': 80, 'total_height': 100, 'image': 'spritesheet.png'},
      {'name': 'twitter', 'x': 10, 'y': 20, 'width': 20, 'height': 30, 'total_width': 80, 'total_height': 100, 'image': 'spritesheet.png'},
      {'name': 'rss', 'x': 30, 'y': 50, 'width': 50, 'height': 50, 'image': 'spritesheet.png'}
    stylus = json2css(obj, {'format': 'stylus'});

// Result (stylus)
$github_x = 0px;
$github_y = 0px;
$github = 0px 0px 0px 0px 10px 20px 80px 100px 'spritesheet.png';
$twitter = 10px 20px -10px -20px 20px 30px 80px 100px 'spritesheet.png';
$rss = 30px 50px -30px -50px 50px 50px 80px 100px 'spritesheet.png';
spriteWidth($sprite) {
  width: $sprite[0];
sprite($sprite) {

// Inside of your Stylus
.githubLogo {


json2css is a single function repo

 * @param {Object[]} input Object to convert into CSS
 * @param {String} input[*].name Name to use for the image
 * @param {Number} input[*].x Horizontal coordinate of top-left corner of image
 * @param {Number} input[*].y Vertical coordinate of top-left corner of image
 * @param {Number} input[*].width Horizontal length of image
 * @param {Number} input[*].height Vertical length of image
 * @param {Number} input[*].total_width Horizontal length of spritesheet
 * @param {Number} input[*].total_height Vertical length of spritesheet
 * @param {Number} input[*].image Path to image itself (used as a URL component)
 * @param {Object} [options] Options to convert JSON with
 * @param {String} [options.format=css] Format to output json in
 *     Available: json, json_array, css, less, sass, scss, scss_maps, stylus
 * @param {Mixed} [options.formatOpts={}] Options to pass through to the formatter

New templates can be added dynamically via

// Processes template via function
json2css.addTemplate(name, fn);

// Processes template via mustache
json2css.addMustacheTemplate(name, tmplStr);


In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint via grunt and test via npm test.


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As of Sep 08 2013, Todd Wolfson has released this repository and its contents to the public domain.

It has been released under the UNLICENSE.

Prior to Sep 08 2013, this repository and its contents were licensed under the MIT license.

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