image-set.md

image-set example

Example configuration for usage with CSS image-set method.

CSS markup

.image {
  /* fallback */
  background-image: url("background-image.png");
  /* image-set */
  background-image: image-set("background-image.png" 1x,
                              "[email protected]" 2x,
                              "[email protected]" 3x);
}

gulp-responsive configuration:

var gulp = require('gulp');
var $ = require('gulp-load-plugins')();

gulp.task('images', function () {
  return gulp.src('src/*.{jpg,png}')
    .pipe($.responsive({
      // Convert all images to PNG format
      'background-*.*': [{
        width: 300,
        rename: {
          extname: '.png',
        },
      }, {
        // Produce 2x images
        width: 300 * 2,
        rename: {
          suffix: '@2x',
          extname: '.png',
        },
      }, {
        // Produce 3x images
        width: 300 * 3,
        rename: {
          suffix: '@3x',
          extname: '.png',
        },
      }],
    }))
    .pipe(gulp.dest('dist'));
});

More info

• Specification
• Browsers support for image-set method form caniuse.com
• gulp-responsive