LCP request discovery

Connor Clark

Published: Oct 8, 2025

Optimize LCP by making the LCP image discoverable from the HTML immediately, prioritizing it, and avoiding lazy-loading.

How to pass this insight

If a page's LCP is an image:

• Use fetchpriority=high on the image element, or on its preload directive.
• Ensure the image is discoverable from the main document (either because it is directly in the HTML, or the image is preloaded).
• Avoid loading=lazy for the image.

Additional references

• Insight source code
• Optimize Largest Contentful Paint - Eliminate resource load delay
• The performance effects of too much lazy loading