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The psychology of site speed and human happiness

Speed Curve

The internet may change, and web pages may grow and evolve, but user expectations are constant. Some sensory memory does stick, of course. In a 1999 study of workplace interruptions , groups of workers were subjected to various disruptions in the course of their day-to-day responsibilities. Do delays really hurt productivity?

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An In-Depth Guide To Measuring Core Web Vitals

Smashing Magazine

Similarly, FID is often dependent on processor speed and how the device can handle all this content we’re sending to it — be it images to process, elements to layout on the page and, of course, all that JavaScript we love to send down to the browser to churn through. CrUX LCP dashboard ( Large preview ). CrUX is Chrome only.

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Front-End Performance Checklist 2021

Smashing Magazine

CrUX generates an overview of performance distributions over time, with traffic collected from Google Chrome users. Just when you need to make a case for performance to drive your point across: UX Speed Calculator visualizes an impact of performance on bounce rates, conversion and total revenue — based on real data.

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Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]

Smashing Magazine

Luckily, there are many great options that help you automate the collection of data and measure how your website performs over time according to these metrics. For Mac OS, we can use Network Link Conditioner , for Windows Windows Traffic Shaper , for Linux netem , and for FreeBSD dummynet. Image source ). Large preview ).

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Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]

Smashing Magazine

This might be very different for your company, of course, but that’s a close enough approximation of a majority of customers out there. Luckily, there are many great options that help you automate the collection of data and measure how your website performs over time according to these metrics. Image source ). Large preview ).