What Is Preload in SEO?
Use Cases
Used by SEO teams to preload CSS or font files needed for initial content, reducing render-blocking delays.
Helps optimize metrics like Largest Contentful Paint (LCP) and First Contentful Paint (FCP) by prioritizing above-the-fold assets.
Preloading hero images ensures they load fast, enhancing the page experience signal important for rankings.
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Frequently Asked Questions
What’s the difference between preload and prefetch?
Preload is for fetching critical resources needed right now, while prefetch is for loading resources needed on future navigations.
Which file types can be preloaded?
Common types include fonts (.woff, .woff2), images (.jpg, .png), stylesheets (.css), and scripts (.js).
How does preload impact SEO rankings?
Faster page load speeds from preloading can improve Core Web Vitals, which are a Google ranking factor.
Can I preload multiple resources on one page?
Yes, most preloaded assets are cached following normal HTTP cache-control rules.
Do preloaded resources get cached?
Add <link rel="preload"> tags in the <head>, specifying the ‘as’ attribute to inform the browser of the resource type.
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