Michael Scharnagl • 11/2/2017

Network based image loading using the Network Information API in Service Worker

This technical article details a method for improving web performance and user experience by leveraging the Network Information API (specifically the effectiveType attribute) inside a Service Worker. It provides a code tutorial showing how to intercept image requests and serve low-resolution images on slow connections (2G) and high-resolution images on fast connections (4G).

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#service worker #image optimization #progressive enhancement