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4 documents tagged with “CSS”

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CSS can speed a site up or slow it down. Critical CSS inline in the head, lazy loading the rest, content-visibility for invisible sections. On the other hand a huge bundle of styles from a design system that blocks rendering. Details decide.

Under the CSS tag you will find articles on splitting critical and deferred CSS, using content-visibility and contain, and the impact of the utility-first approach (Tailwind, UnoCSS) on speed.

CLS: How to Maintain Element Heights (Images, JS Components, iframes…)

Discover why and how to ensure dimensions for elements like <img>, <iframe>, or JavaScript components that are asynchronously inserted into a page, using HTML or CSS.

How to Speed Up Your Shoptet E-shop: Specific Advice and Common Mistakes

Shoptet is fast, unless you slow it down. We show you how to optimize speed: what harms, what helps, and how to keep an eye on your e-shop.

Test: Is It Better to Have Many Small CSS Files or One Large One?

At PageSpeed.ONE, we often find ourselves in "evergreen" discussions that divide the team. One eternal question is: Is it faster to have many small CSS files divided by components, or just one large file?

Web Font Optimization: 6 Steps to Speed Up Your Site

The world of web fonts is much like a beauty salon – we all want the best, but we’re not always willing to wait while the stylist finishes their work. And your visitors? They’re particularly impatient.

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