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Why PageSpeed says reduce unused JavaScript

This story is from 2026-10-10. It is preserved in the archive; the latest stories are on the live feed.

PageSpeed watched the page open. It listed scripts the browser downloaded and barely ran. That is the whole warning. Here is how to read the list without breaking the page. You already know the line. Reduce unused JavaScript. Under it, a stack of file addresses, and a size next to each one. The top…

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  1. 2026-10-10 10:51 · DEV Community — AI
    Why PageSpeed says reduce unused JavaScript

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