An introduction to responsive images standards: , @srcset and @sizes.
Responsiveimages!Derek Johnson
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• Resolution switching• Viewport based• Pixel density• Art direction• Design breakpoints• Media types• Relative units• Image formats• User control of source
srcset>
srcset=“cat.jpg 1x, cat2.jpg 2x”
srcset=“cat.jpg 300w, cat2.jpg 600w”
srcset=“cat.jpg 300w, cat2.jpg 600w”sizes=“(min-width:50em) 30vw,(min-width:20em) 50vw,100vw”
sizes="(min-width:78.947em) 18.75em,(min-width:74em) 23.75vw,(min-width:60em) 31.6666667vw,(min-width:38em) 47.5vw,95vw"type="image/webp">sizes="(min-width:78.947em) 18.75em,(min-width:74em) 23.75vw,(min-width:60em) 31.6666667vw,(min-width:38em) 47.5vw,95vw"type="image/jpeg">
browser support
polyfill