Independent check of one page

Measure when the largest main block appears

PageSpeed Insights reports LCP, its element and delay causes. Test the exact URL and device, and distinguish real-user field data from a laboratory run.

A page-loading filmstrip compares late and fast mobile LCP
Save the report link, element screenshot and test date.

Use PageSpeed Insights

  1. Open PageSpeed Insights.
  2. Enter the complete URL, not only the domain.
  3. Review Mobile and then Desktop.
  4. Find Largest Contentful Paint and the LCP element.
  5. Save the full report link and screenshot.

Interpret the value

LCP thresholds
ValueAssessmentAction
up to 2.5 sGoodPreserve the result
2.5–4 sNeeds improvementInspect timing phases
over 4 sPoorPrioritise repair

Why results differ

  • field data covers 28 days while lab data is one run;
  • server, network, cache and third-party code vary;
  • mobile and desktop can have different LCP elements;
  • another page using the template may contain a heavier image.

Run the lab test 3–5 times and compare the median. Automatic auditing will be added later and will inspect only the submitted URL; repair pricing follows template count. Order the repair.