Official statement
For resources hosted on other domains like CDNs, add DNS prefetch or preconnect metadata. These hints allow the browser to perform DNS resolution and establish connections in the background, paralleling these network tasks.
Other statements from this video 14 ▾
- □ Is Page Experience really an essential SEO lever?
- □ Why does each page have its own independent LCP score?
- □ Why is aiming for a Largest Contentful Paint under 2.5 seconds crucial for SEO?
- □ Why are Google’s LCP scores derived from real users?
- □ How important is the LCP score from the Search Console for your SEO strategy?
- □ Why should every SEO professional consider a CDN for optimizing LCP?
- □ How can Service Workers help boost your LCP by 80%?
- □ How does removing unused scripts and CSS really enhance LCP?
- □ Should you inline critical CSS and JS to boost your SEO?
- □ Should you use async and defer to optimize your SEO scripts?
- □ Why is preload vital for SEO of critical content?
- □ Should you implement loading='lazy' to optimize images that are not immediately visible?
- □ Are modern image formats truly revolutionizing SEO optimization?
- □ How can you get real-time LCP data using Google Analytics?
Official statement from
(5 years ago)
⚠ A more recent statement exists on this topic
Should you really optimize preloading hints for Googlebot?
View statement →
TL;DR
Google emphasizes the importance of DNS prefetch and preconnect to speed up external resources. Specifically, this helps reduce the latency of network requests. SEOs need to integrate these metadata to optimize the performance of sites using external resources.
❓ Frequently Asked Questions
Quels navigateurs supportent DNS prefetch et preconnect ?
La plupart des navigateurs modernes, y compris Chrome, Firefox et Edge, les supportent.
Les DNS prefetch et preconnect impactent-ils le mobile SEO ?
Oui, ils sont cruciaux pour améliorer le temps de chargement sur mobile, où les connexions peuvent être plus lentes.
Comment mesurer l'impact de ces optimisations ?
Utilisez des outils comme Lighthouse ou WebPageTest pour évaluer les améliorations de performance.
🎥 From the same video 14
Other SEO insights extracted from this same Google Search Central video · published on 05/10/2021
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