Performance fix guide
LCP Element Requires Optimization
The Largest Contentful Paint element has been identified and requires optimization. Improving LCP directly impacts Core Web Vitals score and search ranking.
Issue ID: CWV-LCP-DIAG-001
Severity: major
Impact: High
Effort: M
Use this article when
- You need deeper remediation guidance than the issue card can show.
- You want CMS-specific steps before handing the fix to a developer.
- You want a repeatable re-check path after shipping the change.
What this issue is
The Largest Contentful Paint element has been identified and requires optimization. Improving LCP directly impacts Core Web Vitals score and search ranking.
Why it matters
The Largest Contentful Paint element has been identified and requires optimization. Improving LCP directly impacts Core Web Vitals score and search ranking. This affects load speed, Core Web Vitals, and how many visitors stay long enough to convert.
How we detect it
- FreeSiteAudit flags this issue when the rule for CWV-LCP-DIAG-001 fails and the page evidence points to Performance tool.
- You can usually confirm this by checking the page source or the relevant page settings inside your CMS.
Evidence examples
Check the affected page source, rendered output, or relevant CMS setting to confirm the missing or incorrect element.
How to fix it
- 1Preload the LCP resource (image, font, or background)
- 2Optimize the LCP image format, compression, and dimensions
- 3Remove render-blocking resources that delay LCP
- 4Use fetchpriority="high" on the LCP image
How to re-check it
- Run Lighthouse and confirm LCP is under 2.5 seconds
Related tools
This issue is best verified with the full FreeSiteAudit crawl rather than a single-point mini tool.