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Method, real cases and tools to improve loading, responsiveness and stability, with no shortcuts for the tests.
Bundles, code splitting, dynamic imports and tree shaking explained simply: how to reduce a site’s JavaScript, how to see what is in the bundle and what to ask…
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The cost of analytics, pixels and behavior analysis tools, how to govern the tag manager, what changes with server-side tracking and when lighter tools are enough.
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In SPAs LCP measures only the first load while CLS and INP accumulate over the whole session: how the metrics behave, the cost of hydration, the answers of…
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An interactive map can weigh as much as the rest of the page: how iframes and embedded widgets affect LCP, CLS and INP, and how to replace them…
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Delaying JavaScript until the first interaction zeroes out Total Blocking Time in tests, but moves all the work onto the user’s first tap: what happens to INP, to…
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A single thread runs JavaScript, calculates layout and responds to users: what long tasks are, how Total Blocking Time is calculated, how it relates to INP and how…
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The back/forward cache makes going back to the previous page instant, but many sites are excluded from it without knowing: how it works, what blocks it and how…
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Analytics, pixels, chat, reviews and A/B tests often weigh on Core Web Vitals more than the site’s own code: how to measure their cost and how to govern…
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