Tim Kadlec • 10/13/2020

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The article details a performance analysis of a third-party widget that creates consecutive long tasks, blocking the browser's main thread for 2.5 seconds on a high-end MacBook Pro. Testing on a low-end Android device reveals the problem balloons to 48.6 seconds, causing Chrome to fail. It discusses how such poor performance creates a data blind spot, as analytics can't capture sessions from users who abandon the site, highlighting the importance of performance monitoring and considering missing data.

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#web performance #analytics #Third Party Scripts
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