![]() ![]() use variable fonts or a limited set of weight variations.use font-display: optional to prevent layout shifts.In summary we need to prevent the layout shift by letting the browser render in a fallback system font if it doesn't get the web font in time, then optimise our fonts to try to get them to the browser before it needs them: ![]() ![]() In this post we will explore the surprisingly complex world of text rendering on the web and some techniques to remove FOUT while not incurring a CLS penalty. One common cause of layout shift is surprisingly difficult to resolve though: flashes of unstyled text (FOUT). Some sources of layout shifts have been simple to resolve: pre-allocate the correct space for dynamic elements, use width and height attributes on images and prioritise visible elements in your HTML document. One of the outcomes of the release of Core Web Vitals (and subsequent inclusion in Google's page ranking algorithm) is that we have been paying more attention to unexpected layout shifts and the cumulative layout shift (CLS) score. ![]()
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