Avoid lazy-loading images critical to Largest Contentful Paint.
- Avoid lazy-loading images critical to Largest Contentful Paint1 cited source1 category
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Why this matters
Lazy-loading LCP images delays their appearance, harming page load speed metrics.
Hypothetical standard operating procedure
Adapt this example to your site, access, tools, and change process. It is our suggested procedure, informed by the sources below.
- Identify the element used as the LCP on key pages.
- Ensure these images do not have loading="lazy" attribute.
- Set loading="eager" and fetchpriority="high" on LCP images.
- Verify in performance tools that LCP images are requested immediately during page load.
- Test across devices to ensure consistent and fast LCP image loading.
Watch for
Improper lazy loading may increase LCP time and hurt user experience scores.
Definition of done
LCP images load eagerly and render promptly within 2.5 seconds on page start.
Sources & attribution
Original checklist wording and example SOP by Best SEO Checklist, using source-grounded AI assistance. Editorial contact: Ted Kubaitis, @tedkubaitis on Teams. Check current source guidance before implementation.