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Front-End Performance Checklist 2021

Smashing Magazine

Based on Tim Kadlec’s research and Marcos Iglesias’ notes in his talk , traditional metrics could be grouped into a few sets. FrustrationIndex While many metrics featured above explain when a particular event happens, Tim Vereecke’s FrustrationIndex looks at the gaps between metrics instead of looking at them individually.

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I Used The Web For A Day On A 50 MB Budget

Smashing Magazine

Chrome devtools screenshot of the DOM, where I’ve expanded one inline style tag. The browser will guess at what the highest priority assets are, but you can provide a resource hint using the <link rel="preload"> tag, instructing the browser to download the asset as soon as possible. Google Homepage — DOM.

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