Official statement
Using font-display: swap should be avoided as it tells the browser to display a fallback font first and then replace it with the web font regardless of loading time, which can cause significant shifts and increase the CLS score.
Other statements from this video 12 ▾
- □ Why is CLS critical for your SEO strategy?
- □ Why is CLS essential for your site's visual stability and SEO success?
- □ How can you optimize your CLS score for better SEO results?
- □ Why does Google prioritize real user data for CLS?
- □ Why does it take a month for CrUX data to stabilize in the Search Console?
- □ Why is specifying image dimensions crucial for technical SEO?
- □ How does reserving space for iframes boost your SEO?
- □ How do empty ad spaces affect your site's SEO?
- □ How can preloading web fonts help reduce CLS?
- □ How does 'font-display: optional' influence your SEO?
- □ Why Should You Choose SVGs Over Icon Fonts for SEO?
- □ Do CSS animations really have no impact on your CLS score?
Official statement from
(4 years ago)
⚠ A more recent statement exists on this topic
Does hreflang really change the ranking or just swap the URLs?
View statement →
TL;DR
Google advises against 'font-display: swap' due to CSS shifts that negatively impact the CLS score. This leads to layout shifts that harm the user experience.
❓ Frequently Asked Questions
Quels sont les risques de 'font-display: swap' ?
'Swap' peut augmenter le CLS en provoquant des décalages de contenu lors du chargement de la police web.
Comment tester l'impact de 'font-display: swap' sur le CLS ?
Utilisez des outils d'analyse comme Lighthouse pour mesurer l'évolution du CLS avec cette option.
Y a-t-il des alternatives à 'font-display: swap' ?
'Font-display: optional' offre un compromis en limitant les flashs de police invisible sans grands mouvements de mise en page.
🎥 From the same video 12
Other SEO insights extracted from this same Google Search Central video · published on 19/10/2021
🎥 Watch the full video on YouTube →
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