Tim Kadlec • 7/15/2021

The performance effects of too much lazy-loading

This article analyzes publicly available web transparency data and A/B testing to understand the adoption and performance characteristics of native image lazy-loading. It finds that while lazy-loading effectively reduces unneeded image bytes, overuse negatively impacts performance. The analysis recommends eagerly loading images in the initial viewport and liberally lazy-loading the rest to achieve fewer bytes loaded and improved Core Web Vitals.

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#Web Development #performance #image optimization