BLOG · WEB PERFORMANCE
Method, real cases and tools to improve loading, responsiveness and stability, with no shortcuts for the tests.
Autoloaded options, metadata without indexes, revisions, transients, sessions and logs: how the database slows down WordPress dynamic pages, how to diagnose it and how to clean it up…
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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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How an image CDN works, what it offers compared with plugins that optimize on the server, what the costs and risks for LCP are and how to tell…
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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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How HTTP compression works, how Gzip, Brotli and Zstandard differ, when to compress in advance and when on the fly, how to configure the server and what effect…
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How the browser picks an image variant, why a wrong sizes attribute makes it download files many times larger, when to use picture and how to handle it…
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dns-prefetch, preconnect, preload, prefetch and fetchpriority: how the browser decides priorities, when each hint speeds up the page and when it slows it down, with WordPress examples.
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DOM, CSSOM, render tree, layout, paint and composite: how the browser turns code into pixels, why CSS and synchronous scripts block the first paint and how to shorten…
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The same URL can serve AVIF, WebP or JPEG depending on what the browser supports: how negotiation with the Accept header works, why Vary: Accept is essential and…
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