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Category: Performance

Image Formats in 2026: AVIF First, and Fewer Bytes Than You Think

AVIF is universally supported and half the size of JPEG at equal quality. The modern image stack: format, sizing, priority, and the three attributes that matter.

Font Loading Without the Flash: A 2026 Strategy

FOUT, FOIT, and layout shift are all self-inflicted. Preload, font-display, and size-adjust fallbacks make web fonts effectively invisible to loading.

Speculation Rules: Instant Navigation by Betting on the Next Click

The browser can now prerender the next page before the user clicks — entire navigations in 0ms. The Speculation Rules API, and how to bet without wasting bandwidth.

content-visibility: The Biggest Rendering Win Nobody Ships

One CSS property that tells the browser to skip rendering offscreen sections entirely — often halving initial render time on long pages. Here is how to use it safely.

INP: The Metric That Finally Measures How Your Site Feels

Interaction to Next Paint punishes what users actually hate: taps that do nothing. Here is where INP debt hides and the patterns that pay it down.

Glass UI: and why you should

How clip-path and isolation stop backdrop-filter from bleeding through stacking contexts.

Dublin, IE • 00:00

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