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CLS (Cumulative Layout Shift) measures the extent to which a page’s layout shifts unexpectedly during use, the classic “accidental click” on a banner that appears later. Thresholds: good ≤ 0.1, needs improvement ≤ 0.25, poor above that. Typical causes include images and iFrames without reserved dimensions, web fonts that load late, and dynamically displayed ad slots. At Waterproof Web Wizard, we reserve space for all media elements using `width/height` or `aspect-ratio` and implement web fonts with `font-display: swap`, CLS issues can usually be resolved with a manageable amount of effort.
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// further reading
Am 27. März hat Google das erste große Core Update des Jahres gestartet. Es ist seit sechs Tagen aktiv und läuft voraussichtlich bis zum 10. April. Gleichzeitig gab es im März zwei weitere Updates. Was steckt dahinter, wen betrifft es und was rate ich meinen Kunden? Hier die Fakten. Drei Google Updates in einem Monat […]
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